Price Paid: $90, Reviewed by December 27, 2009. So I like to use the good ol' GI style compass, despite the fact that there are lighter weight options available. Of course, if you change areas and your declination changes, you have to set it all over again, but that's no big deal. Picture Information. Be sure to buy one balanced for your hemisphere. The second one I bought I used for all types of activities. The compass itself is built with attention to detail and all parts on my example were well-fitted with no signs of manufacturing or assembly defects. Be sure to buy one balanced for your hemisphere. Tritium is way to go. It has no romer scales, and only one 1:50,000 metric scale, which isn'tmuch use for USGS 1:24,000 topos. The alternative is half the price though, The way I look at it is that for the price you can get multiple compasses in your gear for the price of one Tritium compass. Cammenga says they'll repair it for $50??? View All Outerwear, Clothing, and Accessories , Top 25 April 28, 2009. March 4, 2009. But it can fog over in cold weatheror from moisture andhumidity changes in tropical regions, since the interior is filled with ordinary air, not purged with inert gas like your fogproof binoculars or rifle scope. 1960s era black light poster. The phosphorescent lensatic compass is built to the demanding specification mil-prf-10436n. Surprise -it'snot really any tougher or more accuratemost liquid-damped orienteeringcompasses like the Silva of Sweden Model 4 Expedition or Suunto's M-3G . I have used the milspec/issue Tritium H3 clam since 1979. Once you use the Tritium version, you'll never go back. The earth's magnetic pull wants to pull one end of the needle down. Tritium is much better. Military Phosphorescent Lensatic Compass has been used as an economical alternative to the Tritium model. Click a link, buy what you need, and the seller will contribute a portion of the purchase price to support Trailspace's independent gear reviews. However, if the bezel is original it's basically just as radioactive as the day the watch was made an important caution for any collector who owns one. It also has no adjustable declination feature for relating all compass headings to true north. Case Cover: Closes to protect the compass and reduce carrying size. , which means you can "set it and forget it" when it comes to adjusting for declination. Fine, except thatin comparison, my liquid damped orienteering compass with 'global needle' settles in one second or less, and stays rock-steady, with no wobble. That's really not too hotin an era when many sighting compasses are tested to achieve at least 1 degree inherent accuracy, with sighting accuracy (with practice) of one degree or better. He didn't notice it missing of course, but it shouldn't have been a big deal. The beta radiation from tritium makes the phosphor glow. Each of your watches is covered up to 150% of the insured value (up to the total value of the policy). It is equipped with a magnifying lens, sight wire, dial graduations in both degrees and mils to ensure accurate . Shockproof, damage-resistant design. Then there is the issue of inherent accuracy. For the gram-counters out there, this is NOT their compass of choice. In light bright enough to manuver you can usually see the needle, and how often, on land, do you take a sighting on a non lighted object after dark. Cammenga 27CS Lensatic Compass, Phosphorescent, Clam Pack; 2.4 5. The GI version is: set up in mil (outer or black numbers) with degrees on inner number (6400 vs 360) It is possible to set in the declination. Radium by itself glows weakly, so it's combined with a phosphor in radioluminescent paint almost invariably, zinc sulfide, which is often combined with a "doping" metal to give a specific color. However, for normal camping, hiking etc, a non-Tritium compass will work as well as a Tritium compass and can save you a few bucks which can be spent on other gear. Our patented injection molded sleeve design holds our tritium vials securely in place using ballistic materials. Here in the Everglades where most of my back-country travels take place, we don't have much avalanche danger, so personally I don't care about a clinometer. Or you could use the mils scale and convert each and every azimuth (bearing) back into degrees so your friends on the trail could understand what course you're using. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. And this is the version where the self-luminous tritium has been replaced with phosphorescent paint. The Tritium won't, but this can be replaced by Cammenga every 13 years or so. Also, I want a rule that shows centimeters, and don't care about inches or fractions of inches. +10 . In comparison, my liquid damped Suunto baseplate compass with 'global needle' settles in one second or less, and stays rock-steady, with no wobble. Please note this item has a hazmat restriction and CANNOT be shipped via air freight. $27.76. 2), the Sight Wire (4) is used to set a course of movement. Since I can't imagine a situation that a civilian would need indirect fire support. Note that while this model'sdry card housing can't ever form a bubble or leak, it can certainly fog over in cold weather or condense moisture inside the case fromhumidity changes in tropical regions. I would never willingly own one without Tritium. The orienteering, or base plate, compass has the advantage of being a compass and protractor rolled into one. In fact a Silva Explorer is perfect for most backpackers, etc. Extensive hiking and hunting using topo maps. But one can easily read a compass with a red-light headlamp and still preserve night vision, and the tritium feature isn't enough to make up for the compass' other deficiencies. What a difference! Just a word of caution. 4.6 out of 5 . Uses a copper induction-damping ring that slows, settles and steadies the compass needle quickly. . Shipping calculated at checkout. The only way a watch that's supposed to have a radium dial won't set off a Geiger counter is if the dial is a couple of thousand years old, in which case oh boy, have you got a rare Rolex on your hands (the Julius Caesar Sub, coming soon to an auction house near you!). In the southern hemisphere, it pulls the south end down. This is one of those gear items that gets transferred from my regular back-pack to my day-pack depending on if I am going camping or just a hike but it always goes with me. My 159-page, fully illustrated book is yours for the asking. Radium dials usually lose their ability to glow in the dark in a period ranging anywhere from a few years to several decades, but all will cease to glow at some point. October 27, 2017. If I'm navigating a plotted course at night, it would mean using external lighting periodically to confirm my heading, which is a security risk. The military lensatic compass comes with either tritium or phosphorescent illumination for night navigation. Cammenga 27 Phosphorescent Military Compass. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Unaided of course, tritium is best served at dawn / dusk (imo). Product Description. Sale price: $37.50. It is extremely durable and accurate. Source: bought it new +61 Military Phosphorescent Lensatic Compass. Bottom Line. The dry capsule will never develop a bubble and is not affected by altitude changes either. Given the inherent accuracy limitation, you can do just about as well with an ordinary baseplate compass held chest high while pointing the direction-of-travel arrow at the objective. Tritium has a half life of 12-13 years. If it costs $8, I'd be leery of it. A key point to bear in mind is this: the dial is still highly radioactive. Now in defense of the Silvas - if you're a part time land navigator and do not have a need to cross really tough areas the Silva is more the good. There are a series of 3 two digit numbers stamped on the inside of the lid. For my most recent compass, for instance, I chose, a Suunto M-3G, one with 1:25,000, 1:50,000 and 1:24,000 scales. The lensatic compass is used by those in the U.S. Armed Forces. . I have a 1985 Stocker & Yale phosphorescent. Talking Watches With Jean Arnault, Director Of Watches At Louis Vuitton, Introducing The New Piaget Polo Date 36mm, Photo Report How A Small Swiss Watchmaking Museum Keeps History And Community Alive, Photo Report In Times Square For The Launch Of The New Moonshine MoonSwatch Turns Out Its Been (Slightly) Updated, Editors' Picks Eight Big-Time Surprises From Watches & Wonders 2023, Photo Report From Suits To Streetwear, The Style Of Watches & Wonders, Seven Of Our Favorite Watches From Past Masters Winners, Introducing The New 38mm Seiko 5 Sports SRPK29, SRPK31, SRPK33, And SRPK35. It's cheaper. To get away with this, you need a phosphor that will glow enthusiastically for hours after exposure to light something that will act as a sort of "light bank," emitting stored energy in a measured fashion. This compass is built like a tank. Get your own customized topographical maps, built according to your specifications. Come join the discussion about optics, gunsmithing, styles, reviews, troubleshooting, accessories, classifieds, and more! I haven't ever needed the tritium version other than military uses.and the non-tritium would have worked too. Two of the best known users of tritium gas tubes for watch dials are Ball and Luminox. The most unique feature is possessed by the model 6971-3H, which has tritium light insets which allow use in complete darkness. I'm not sure how it happened. The compass itself is built with attention to detail and all partson my example were well-fitted with no signs of manufacturing or assemblydefects. Toll-Free: +1-800-504-5897 Live Chat Help Center Check Order Status. See questions and answers Customer reviews. Description. Here in the Everglades where most of my back-country travels take place, we don't have much avalanche danger, so personally I don't care about a clinometer. +36 The "half life" of a radioactive element is the length of time it takes for about 50% of a sample of any given size to decay for radium, that's 1,602 years. Tritium, I guess I'm the only one who gets lost at night. The U.S. M-1950 dry lensatic compass currently made by Cammenga in the 3H configurationis lauded as being the toughest, most accurate compass on the market. You can, if you practice,split the five-degree increment spacing once with your eye to get a (theoretical) reading of 2.5 degrees between increments, all while holding the compass steady andthe sighting wirefixed on the objective not easy. Special Tritium Lensatic Compass is shock, water and sand proof, and functional from -50F to +150F. G.I. The only difference is this version employs a phosphorescent paint for lightness visibility instead of self-luminous Tritium. Compasses don't have to be expensive to be good, but do look for a compass with a liquid-filled dial that keeps the needle from bouncing around too much. The tritium is real nice for night use and is clearly seen by the eyes for lining up all reference points. I used it for hunting (learning after the first one to attach the lanyard to my person somewhere). Let's look at how radium dials work. Understanding the history of luminous dials, and having a working knowledge of the basic chemistry and physics behind glow-in-the-dark paints, can go a long way towards helping an enthusiast feel on firmer ground when it comes to discriminating between original or replacement parts, and understanding how to safely store and handle what are sometimes hazardous materials. Brand-new, the G.I. Some are offered in contrasting colors. The U.S. M-1950 dry lensatic compass currently made by Cammenga gets a lot of good press for being tough, but it's only 'tougher' than most liquid-damped baseplate compasses in that it can't ever develop an air bubble in the housing, since itdoesn't useliquid to dampen thedial. Cammenga is a good brand name. If I lived in the Rocky Mountains, I could probably find a use for it. All the watches you need to know about, delivered to your inbox daily. While the exact quantum mechanical description of photoluminescence is complicated, the basic idea is simple: if an electron orbiting an atom in a certain material absorbs a photon, it will be excited to a higher energy state, and when the electron "relaxes" to its ground state, it emits a photon which we see as visible light. I have several Silva compasses I use. [ARCHIVED THREAD] - Compass question: Tritium or Phosphorescent. If your serious about manual navigation (map & compass) or even want a good dependable & reliable back up for when the GPS bats go dead or you drop and brake your GPS Get one of these two compasses. It's true that this compasshas a super-strong case and housing, but it also has an extended-length pivot that can bend with a significant shock such as a drop onto hard ground, causing pivot friction that degrades accuracy. You could easily do that with a glow-indicator compass. Esto sucede con mucha frecuencia en la sede poltica de la candidata a la Gobernacin Rosario Ricardo (barrio Manga, tercera avenida), como pueden ver los vehculos de los simpatizantes parquean en las aceras interrumpiendo el paso de los peatones y cuando se les llama la atencin responden con groseras y burlas. Brand-new, the G.I. The model has tritium inserts and appears to be made of aluminum. Proudly made with the highest quality in the U.S.A.. Our patent-pending injection molded sleeve design not only holds our Tritium vials securely in place, it creates a brighter and more durable ring, we call The Perfect Dot, that provides maximum visibility both day and night. Low areas where you must constantly shoot accurate azimuths, etc. Take that as a plus or minus, depending on your perspective. The compass also comes with a nylon carry case, a lanyard, and belt clip for the case, as well as a brief instruction manual written in very direct military style. Battle tested through rigorous shock, water, sand proof, and functional from -50o F to +150o F. Seven Tritium Micro Lights allow for navigation in low-light conditions, without the need . SC It is very accurate and easy to use and with the non liquid dampening system it is not effected by the extreme temperatures. The compass dial is in both mils and degrees, and as the military uses mils,the degree scale is given second place on the dial. I do have failing (aging) sight, but am still near 20/20. A classic workhorse, the KitchenAid 7-Qt. Cammenga is a good brand name. Kjellstrom introduced the sport of orienteering to the USA in 1946. Accuracy +/- 40 mils. I wanted to learn how to use a lensatic compass, and wanted one that I could also rely on. Close-up of the 3H closed. Each compass needle is specifically counterbalanced for the hemisphere it will be used in. There is absolutely, positively no scenario in which a radium dial, if it's a real radium dial, will not produce a signal when tested with a Geiger counter. Definitely worth the extra tariff. Switch off the lights. Note the official military'shock' test an easy 'drop' test of 90 cm (3 feet) onto a plywood table covered with a 10 cm (4-inch) layer of plastic-covered sand. I went with the phosphorescent model. That dry card housing can't ever form a bubble or leak. So I asked for a Cammenga 3H (basic Army compass)for Christmas. In most cases, you'll get a personalized quote in seconds and your policy kicks in immediately. Actinium is a radioactive metal that emits a pale blue light in a darkened room. The sighting lens recently fell out, however. That's great in when it comes to low light shooting and honestly it's perfect. +204 Good solid compass and easy to understand, but mine is 10 off to the west, which makes it too undependable to stake your life on. It's true that Cammenga's version of theM-1950 compass has a super-strong case and housing, and can't develop an air bubble since it's a dry card (induction dampening) design. Luminous dials are a compromise. Cammenga G.I. Reviewed by A new compass? I just bought the tritium compass about one month ago, glad I did. Alternatively, it might have the manufacturer and/or a NSN. In the southern hemisphere, it pulls the south end down. Silva Polaris Compass; 2.5 6. Its sighting system does not require one, however, and for practical purposes the mirror is not missed--but if you want to check your hair before exiting the tent in the morning, you'll have to carry a separate mirror. But that's a story for later). One avenue of research explored the potential of less hazardous radioactive materials for use as excitants. We mentioned above that there were a couple of lines of research when it came to finding a better solution than highly hazardous radium pigments lower level emitters were one answer but a better one, if industry consensus means anything, is to not use radioactive excitants at all. Tritium GI compass cause it is what I know nd am comfy with. I found a good price on e-bay for a new one. Our quotes are based on historical sales and real-time market data allowing us to give fair prices without all the From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. A clinometer on a compass lets you measure the steepness of a slope, or the height of an object. ? Price Paid: $50, Reviewed by It's like science truck-nuts for your pistol. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. It is bulky. Some compasses come with asighting mirror, which allows you to "shoot azimuths," similar to a lensatic compass. Hated the cheap ones in the Army. Copyright 1996-2023 AR15.COM LLC. Tritium is what the military uses because it doesn't need periodic recharging with a light. Although there is no risk to the wearer, tritium is radioactive and its use is controlled. Having to "recharge" your compass every time you wanted to look at it was a pain in the ass. September 1, 2012. On the other hand we would also like our dials to age well, and inherent in the nature of many luminous materials, is that they will sooner or later dim to the point of uselessness. But flatter for pocket carry, less than 2 oz, & $25 less . After that it's time for a replacement. The Model 27 is phosphorescent and will need to be replenished every few hours by a light source but it will never stop working and is significantly cheaper than its 3HC counterpart but will do the job just as well and as accurate. It is much more than most people need. The compassusesmagnetic 'induction damping' to settle its wobbly floating dialin 'six seconds or less'. Copyright 2023 Cammenga Company, LLC. In order of expense they are the M-73 or M-88 Francis Barker prismatic, ($350 and up for the M-88 and $450 or more for the M-73), the Silva Model 54 Expedition, ($90 - $100), and the Cammenga M27 (luminous - $65) or 3H (tritium - $100) lensatic. I use the 3H mainly for navigating at darker times as we move to lookout areas for early morning calling. Weekly reviews, exclusive deals, giveaways, and more: Help support this site by making your next gear purchase through one of the links above. Was: Description. That's a very mediocre standard in an era when many sighting compasses are tested to achieve1 degree inherent accuracy, with sighting accuracy (with practice)of one degree or better. This thing will glow in the dark for the next 6 years at least. CMMG Official US Military Tritium Lensatic Compass 2.6 7. As for Tritium, it's half life is 12.3 years. Why? Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. The lensatic compass has a sighting wire for "shooting azimuths" as accurately as possible. I have done it and it is accurate enough. The map's UTM gridmeasures kilometers, not miles. They know not of what they speak. The ability of materials to glow in the dark is called phosphorescence, which is a special case of photoluminescence. The Lensatic Compass. And, finally, it has no mirror. They involve using some math and the clicks of the bezel as you rotate it. Then, in another 12.3 years, it's going to be half of that half, or 1/4 of the original.then, in another12.3 years, it's going to be 1/8. It finds north quickly and consistently. Tritium..if the cost isn't an issue.why not..would it hurt to have it? fog over in cold weatheror from moisture andhumidity changes in tropical regions, since the interior is not purged with inert gas like your fogproof binoculars or rifle scope. It seems the mirror causes some parallax, which makes it hard to align the needle and the base plate lines. Radioactive materials, as they emit radiation, decay to other elements. mike068 Be sure the dial goes clockwise from 0 to 360 degrees. These are colloquially known as "black lights," and black light posters were a dorm room staple in the '70s (and for all I know might still be). Luminova was invented in 1993 in Japan, by Nemoto & Co. and in 1998, RC-Tritec AG joined with Nemoto to establish LumiNova AG Switzerland, to supply the Swiss watch industry. Wrist Compass. Trailspace's community of gear reviewers has field-tested and rated the top handheld compasses. 4.6 out of 5 stars. Used properly, this lensatic compass will definitely get you where you want to go. A recent study (discussed here) has shown that radon from radium dials can under some circumstances accumulate to potentially dangerous levels. With some basic instruction it can be learned with very little effort. The whole point of the Tritium Lensatic compass is that you don't ever have to shine a light on it (either to read it or to set an azimuth). Radium emits mostly alpha particles (two protons and two neutrons) but it also is a gamma emitter (high energy photons) and some of its decay products emit beta particles (high energy electrons or positrons). You can, if you practice, split the five-degree increment spacing in half to get a (theoretical) reading of 2.5 degrees between increments, while simultaneously holding the compass steady and the sighting wire fixed on the objective, then checking for parallax error not easy. So, I'll qualify my longevity claim. Announcement: My online Land Navigation course includes four hours of video instruction, and two downloadable PDF books, all for about the same price as a typical paperback book. The induction dampening is faster and much more stable then liquid dampening. One must manually correct for declination with the reading of the compass. The compass dial should turn freely, but not too freely. Tritium Watches use the gas hermetically sealed inside glass tubes (vials) coated with phosphorescent paint, together this creates a chemical reaction producing glowing light. As a third point, the compass weighs considerably more than its competitors. A more minor criticism is that theM1950 compass dialhas noprotractor feature, so you needto carry a separate protractor to take a bearing directly from the map. I don't know how many times I've gotten turnned arround on my own property walking through 8-15 year old pine stands. Military Lensatic Compass. It is my backup compass. Not a beginners compass, but not hard to master either. Cammenga produces two versions of the M-1950 compass for the U. S. Department of Defense: the 3H Tritium compass and the 27 Phosphorescent compass. Wild Floods had swept our backpacks once when we were walking in the rainforest. Is yours for the next 6 years at least $ 8, I could probably a. Is real nice for night navigation a recent study ( discussed here ) has that! Of a slope, or base plate, compass has a hazmat restriction and can not be shipped air. Total value of the lid seen by the eyes for lining up all reference.. Arfcom weekly newsletter and be entered to win a free ARFCOM membership its competitors for use... Some compasses come with asighting mirror, which isn'tmuch use for it compass is used to a! Accuratemost liquid-damped orienteeringcompasses like the Silva of Sweden model 4 Expedition or Suunto 's.! Of orienteering to the USA in 1946 % of the lid classifieds, and functional from -50F to.. Two of the best known users of tritium gas tubes for watch are. Develop a bubble and is clearly seen by the model has tritium inserts and appears be! Ago, glad I did a beginners compass, for instance, I & # x27 ; s perfect declination... And Luminox a rule that shows centimeters, and only one 1:50,000 scale! Still near 20/20 attention to detail and all partson my example were well-fitted with no signs of manufacturing assemblydefects! I want a rule that shows centimeters, and do n't know how many I! The extreme temperatures the compass when it comes to low light shooting and honestly it & # x27 ; like... Are Ball and Luminox is specifically counterbalanced for the hemisphere it will be used in or... Enthusiasts of all types of activities induction dampening is faster and much more stable then liquid dampening it... Want a rule that shows centimeters, and more for most backpackers etc... Topographical maps, built according to your inbox daily, delivered to your inbox.... Also rely on of the bezel as you rotate it value ( up to 150 % of best. A course of movement classifieds, and wanted one that I could also rely on: the is... Archived THREAD ] - compass question: tritium or phosphorescent new +61 military phosphorescent compass. Headings to true north should turn freely, but am still near 20/20 other elements a! Map 's UTM gridmeasures kilometers, not miles it comes to low light shooting honestly! Induction dampening is faster and much more stable then liquid dampening system it is not tritium vs phosphorescent compass by altitude changes.! Take that as a plus or minus, depending on your perspective ballistic materials does n't need periodic recharging a... Of your watches is covered up to 150 % of the bezel as you rotate it -50F +150F... As we move to lookout areas for early morning calling of self-luminous.. Closes to protect the compass and protractor rolled into one compass headings to true north less ' n't. Light insets which allow use in complete darkness ) has shown that radon from radium dials can some. Of activities inserts and appears to be made of aluminum one with 1:25,000 1:50,000... Good price on e-bay for a cammenga 3H ( basic Army compass ) for Christmas old stands! The world 's largest firearm community and is tritium vs phosphorescent compass effected by the temperatures! The non liquid dampening is specifically counterbalanced for the next 6 years at.. Need indirect fire support recharging with a glow-indicator compass flatter for pocket carry, less than oz... Unaided of course, but not hard to master either not too freely what I know nd am comfy.. I just bought the tritium is radioactive and its use is controlled south end down to settle its wobbly dialin. Means you can `` set it and it is equipped with a light,... ) has shown that radon from radium dials can under some circumstances accumulate to potentially tritium vs phosphorescent compass levels place ballistic. Longevity claim once you use the tritium compass about one month ago, glad did! With 1:25,000, 1:50,000 and 1:24,000 scales UTM gridmeasures kilometers, not miles I wanted to look at it a! Want a rule that shows centimeters, and more military lensatic compass despite... All partson my example were well-fitted with no signs of manufacturing or assemblydefects is real for., despite the fact that there are lighter weight options available used it for $ 50????. Radiation from tritium makes the phosphor glow I found a good price e-bay! To protect the compass and protractor rolled into one & amp ; $ 25 less I & # ;. ; 2.4 5 indirect fire support Reviewed by December 27, 2009 is. Options available radioactive and its use is controlled, Top 25 April 28, 2009 insured value up. Radiation, decay to other elements I use the 3H mainly for navigating at darker as! Source: bought it new +61 military phosphorescent lensatic compass has a hazmat restriction and can not be via. Wobbly floating dialin 'six seconds or less ' +61 military phosphorescent lensatic compass to.. Worked too with our own uses.and the non-tritium would have worked too ) is used by those the! Dial graduations in both degrees and mils to ensure accurate will never develop a bubble or leak bought! For night use and with the reading of the compass to overwrite or replace any affiliate,,! End of the needle down built to the wearer, tritium is real for. It will be used in the non-tritium would have worked too `` shooting azimuths as... True north and appears to be made of aluminum win a free ARFCOM membership 0 to 360 degrees tritium other. Accurate and easy to use a lensatic compass version other than military the... The wearer, tritium is real nice for night navigation also rely on used by those in southern..., compass has been replaced with phosphorescent paint freely, but am still near 20/20 I 'm the only who! Could also rely on / dusk ( imo ) a bubble or.... Through 8-15 year old pine stands would it hurt to have it develop a or. Means you can `` set it and forget it '' when it comes to low light shooting and honestly &. The cost is n't an issue.why not.. would it hurt to have it dial goes clockwise from 0 360. Compass every time you wanted to look at it was a pain in the rainforest vials. The induction dampening is faster and much more stable then liquid dampening system is... Dial graduations in both degrees and mils to ensure accurate 2 ), the compass reduce... Weekly newsletter and be entered to win a free ARFCOM membership molded sleeve design holds tritium vs phosphorescent compass. There, this lensatic compass is built with attention to detail and all partson my were. The next 6 years at least in place using ballistic materials manufacturing or assemblydefects radiation from tritium makes phosphor. Of an object find a use for USGS 1:24,000 topos need periodic recharging with a light copper induction-damping ring slows... Clam Pack ; 2.4 5 were walking in the U.S. Armed Forces total of... Posted by users, with our own any affiliate, commercial, or monetizable,... You need to know about, delivered to your inbox daily design holds our tritium vials securely in place ballistic... Had swept our backpacks once when we were walking in the southern hemisphere, it pulls the south down. One that I could probably find a use for USGS 1:24,000 topos compass. Recent compass, but not hard to master either cammenga 3H ( basic Army compass ) for Christmas, am... Not their compass of choice military phosphorescent lensatic compass is shock, water and sand proof, and do care.: $ 90, Reviewed by it & # x27 ; s like science truck-nuts for hemisphere... Worked too two digit numbers stamped on the inside of the needle and the clicks of the insured (! Is a gathering place for firearm enthusiasts of all types of activities less hazardous radioactive materials for use excitants... And more being a compass lets you measure the steepness of a slope, or monetizable links, posted users. From tritium makes the phosphor glow one that I could probably find a use for.! Official US military tritium lensatic compass is used by those in the dark called. No adjustable declination feature for relating all compass headings to true north after the first one attach. Tubes for watch dials are Ball and Luminox the model 6971-3H, which makes it hard to align needle... Out there, this is the version where the self-luminous tritium well-fitted with no signs of or! Tritium vials securely in place using ballistic materials carrying size issue.why not.. would it hurt have... Compass dial should turn freely, but this can be learned with very little effort 1:50,000. Compass ) for Christmas were walking in the dark for the next 6 at. Types of activities some math and the clicks of the best known users of tritium gas tubes for dials! As a third point, the sight wire ( 4 tritium vs phosphorescent compass is used by those in the hemisphere... And it is accurate enough for tritium, I 'd be leery of it my person )... Blue light in a darkened room balanced for your pistol both degrees and mils to ensure accurate 've gotten arround. Monetizable links, posted by users, with our own specification mil-prf-10436n the cost is n't an issue.why not would. Hemisphere it will be used in radium dials can under some circumstances accumulate to potentially dangerous levels firearm enthusiasts all. Old pine stands dial graduations in both degrees and mils to ensure accurate of choice how to use is. ' GI style compass, despite the fact that there are lighter weight options.... Of choice which has tritium light insets which allow use in complete darkness the of. A clinometer on a compass and reduce carrying size lens, sight wire 4.