A clinometer on a compass lets you measure the steepness of a slope, or the height of an object. But what option for the Glow in the Dark is better? Accuracy +/- 40 mils. It seems the mirror causes some parallax, which makes it hard to align the needle and the base plate lines. One must manually correct for declination with the reading of the compass. Was: Description. The second quibble is that the scale markings along the straight edge available when the compass is completely open are suitable for 1:50,000 scale markings, but some of the markings (specifically, those for 2000 and 4000 m) aren't marked so as to quickly distinguish them from neighboring marks. I used it for hunting (learning after the first one to attach the lanyard to my person somewhere). We've minimized the paperwork and maximized protection, so you can stop worrying about your watches and focus on enjoying them. This is a nice feature that extends needle life. The original military GI Compass Model #127 made by Cammenga as a Phosphorescent Lensatic Compass for an alternative to the Tritium model with the same durability and military combat use. FTW!!! An interesting coda to this is the Rolex 6542 GMT Master, which was issued with a bakelite bezel that had radium numerals. But what people don't tell you it that it also has an extendedpivot that can bend with a significant shock such as a drop onto hard ground. You cant beat the reliability. Other than the fact that its luminosity diminishes over time, Super-LumiNova appears to be a near-ideal solution to the problem of nocturnal visibility. Air-filled compass housing can't develop a bubble, Self-luminous tritium lighting (in some models), Excellent manufacturing and assembly quality, Deep-well compass housing for use in multiple magnetic zones, No protractor base for taking bearings from a map, Deep-well compass housing for multiple magnetic zones, Universal use, not identified as U.S. gear. Shop Cammenga 27 Phosphorescent Lensatic Compass without Tritium | Up to 10% Off 4.9 Star Rating on 11 Reviews for Cammenga 27 Phosphorescent Lensatic Compass without Tritium Coupon Available + Free Shipping over $49. The compassusesmagnetic 'induction damping' to settle its wobbly floating dialin 'six seconds or less'. Shipping calculated at checkout. 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. Durable, accurate, and not too terribly difficult to learn on. These are great,rugged,water and shock proof..top of the line ..shelf life of about 14 years at top of its illumination. 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. Brief exposure to external light "charges" the phosphorescent markings making it ideal for . It's a little piece of plastic, and for as much as I've loved this compass, I'm more than happy to simply glue a new one in myself. Compass is approved for the Japanese Market. When somebody would love to shoot at you, turning on a light ain't something you want to do. 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). 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In summary, the M-1950 lensatic compass in 3H configuration as made by Cammenga is a special-purpose military compass that needs a redesign to compete as a general-purpose wilderness navigation compass. Copyright 20092023, Hodinkee Inc. All Rights Reserved. Radium paint is actually self-luminous when freshly applied, it requires no external energy source, because the excitatory energy come from radiation emitted by radium particles in the paint. It has no romer scales, and only one 1:50,000 metric scale, which isn'tmuch use for USGS 1:24,000 topos. Lensatic style features a magnifier lens on the rear sight to read compass dial headings for greater accuracy. Cammenga battle-tested Model 27 phosphorescent lensatic navigational and marching compass is made according to the U.S. Army Mil-Spec. Price Paid: $50, Reviewed by The decay chain finally ends in a stable isotope of lead, but you get things like polonium and thallium en route. A new compass? Tritium GI compass cause it is what I know nd am comfy with. $24.81 + $5.65 shipping. Source: bought it new The orienteering, or base plate, compass has the advantage of being a compass and protractor rolled into one. What's more, the latter is stable enough to take a bearing to an objective while walking or riding in a canoe or small boat. $40.00 + $5.00 shipping. 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. +14 Wild Floods had swept our backpacks once when we were walking in the rainforest. +626 My 159-page, fully illustrated book is yours for the asking. Cammenga says they'll repair it for $50??? I paid $70 for the bloody compass. Just a word of caution. In most cases, you'll get a personalized quote in seconds and your policy kicks in immediately. 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. Equipped with 7 Tritium micro-lights, providing continuous illumination for over 12 years. Quoted: Tritiums half life is 12.32 years. Since it is filled with ordinary air, the M-1950 can and does. Very well built, impressive compass, at least until the lens fell out. No one wants to spend more than necessary, and while bargains can be found on Internet auction sites . Constructed with a powder-coated, aluminum frame for optimal endurance. One avenue of research explored the potential of less hazardous radioactive materials for use as excitants. I have read some find it difficult to see and that I can understand if a person has sight issues. It too is 5 stars. 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. A recent study (discussed here) has shown that radon from radium dials can under some circumstances accumulate to potentially dangerous levels. 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!). I bought two of these compasses over the years. Other features of this rugged, waterproof . Slideshare uses cookies to improve functionality . $66.15. Cammenga Model 3H Tritium Lensatic Compass Olive Drab US Military Issue. Extensive hiking and hunting using topo maps. It can be a little more difficult to learn on. I will have to check on my tritium compass, it is semi-lost somewhere in the piles, but will be going on 10 years old, and was surplus . As a practical matter, it's always handy to have a mirror with you in the wilds. The phosphor deterioration means you can't see a glow anymore, but radium takes thousands of years to completely decay. Of course, if you change areas and your declination changes, you have to set it all over again, but that's no big deal. I haven't ever needed the tritium version other than military uses.and the non-tritium would have worked too. I also have a Suunto compass, which was nearly the same price, and reading an accuratebearing is more difficult, time consuming,and prone to interpretation due to the positioning of thenumerals on the outer ring. So I like to use the good ol' GI style compass, despite the fact that there are lighter weight options available. The blue light is called Cherenkov radiation or sometimes the Cherenkov Effect. any other answers are just folks avoiding cognitive dissonance. Tritium Watches use the gas hermetically sealed inside glass tubes (vials) coated with phosphorescent paint, together this creates a chemical reaction producing glowing light. Cammenga Olive Drab Genuine Military Lensatic Phosphorescent Compass. Destinate Tritium Protractor Compass D3-T $78.75; Phosphorescent Wrist Compass J582 $40; Tritium Compass 3H PINK $108.25; Magazine Dust Cover DC556M $2.85; Magazine Well Dust Cover DCM16 $3.80; Tritium Compass 3H $105; Tritium Compass 3HJP (Japan) I use them both, but normally I find my base plate compass easier to use and read, making it the best compass for me. 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. Vintage Cammenga Phosphorescent Military Compass Model 27 US. 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. Low areas where you must constantly shoot accurate azimuths, etc. 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. meaning, in 12.3 years, it's going to be half as bright as original. I have used the milspec/issue Tritium H3 clam since 1979. You can, if you practice,split the five-degree increments in two to get a (theoretical) reading of 2.5 degrees, all while holding the compass steady andthe sighting wirefixed on the objective not easy. But that's a story for later). ), it can be adjusted for magnetic declination, and the mirror has other uses. A classic example is a blue glow associated with a nuclear reactor. 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. Green is the color that's universal for night sights in terms of the actual glowing tritium vial. crossbowme The only problem I have with this compass is it is a little bulky, but I think that knowing my compass is never going to let me down is worth the extra weight. I initially bought a lensatic compass because I wanted to try triangulating a location on a small lake using shoreline markers. I have a Suunto MC-2 Global (plate compass w/sighting mirror). 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. You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. If it's a life support kit, DO NOT skimp. The Cammenga Phosphorescent Lensatic Compass is essentially the same trustworthy model that's supplied to the U.S. Military. Shockproof, damage-resistant design. See questions and answers Customer reviews. It is chipping off on the corners. It worked well for that. Handheld Compasses, Tritium lifespan is 12-14 years, so the glowing dims about then. After all, the U.S. military uses it, so it must be the best, right? :faint: A forum community dedicated to Glock firearm owners and enthusiasts. The compass itself is built with attention to detail and all partson my example were well-fitted with no signs of manufacturing or assemblydefects. As for Tritium, it's half life is 12.3 years. I went with the phosphorescent model. August 3, 2017. It is much more than most people need. Item #: 415 Price: $149.99. This is the real deal! I don't think this is a compass for everyone. Given the accuracy issues, you can do just about as well with an ordinary baseplate compassheld at chest height, and pointing the direction-of-travel arrow at the objective. 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. Cammenga does an excellentjob on meeting milspec standards. Choosing the best compass for you depends on what you want to use it for. A more minor criticism is that theM-1950 compass dialhas noprotractor feature, so you needto carry a separate protractor to take a bearing directly from the map. Having to "recharge" your compass every time you wanted to look at it was a pain in the ass. Clipping is a handy way to collect important slides you want to go back to later. I just don't understand why Cammenga doesn't put out a version with the degree scale on the outer edge of the dial in one- or two-degree increments for the benefit of civilian land navigators. When buying something for the tritium, you buy it knowing the "life expectancy" of it is only going to last that . Source: bought it new Structurally, it's held up great. Be sure to buy one balanced for your hemisphere. Free shipping. Trijicon rear sights are $24.00 at Optics Planet which does not seem too expensive. Cammenga 27CS Lensatic Compass. Shockproof, damage-resistant design. Price Paid: $79.95, Reviewed by ? Luminous dials are a compromise. Don't buy a compass with bubbles in the housing. Go, little guy! It's a personal preference. hassle. So I asked for a Cammenga 3H (basic Army compass)for Christmas. 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. The the annual market is about 400 grams, and as you note, the cost per gram is about $30,000, but think of it this way: it costs about $12 million to produce 400 grams of tritium and get it to the marketplace, but that doesn't necessarily mean it would cost $24 million to produce 800 grams or $6 million to produce 200 grams. Cammenga 27 Phosphorescent Military Compass. The sleek metal build lets you stay anonymous. 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. Avoid those unless that's specifically what you want. 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. Any use of this content without express written consent is prohibited. I found a good price on e-bay for a new one. Only because technical perfection is yet to be achieved do I give this military-spec lensatic compass less than five stars. I learned to navigate on sighting compasses in grade school (1970s), then in the late '90s went to a lensatic. I like to use the good ol ' GI style compass, despite the fact its. S half life is 12.3 years to collect important slides you want to do brief to... The mirror has other uses having to `` recharge '' your compass every time wanted. The M-1950 can and does 've minimized the paperwork and maximized protection, so the dims! For optimal endurance difficult to see and that i can understand if a person has sight issues grade school 1970s. Tritium micro-lights, providing continuous illumination for over 12 years get a personalized quote in and. Battle-Tested Model 27 phosphorescent lensatic navigational and marching compass is made according to the U.S. Military the M-1950 and! ( basic Army compass ) for Christmas when somebody would love to at. Nd am comfy with in immediately i give this military-spec lensatic compass Olive Drab US Military Issue ol ' style..., lately i have read some find it difficult to learn on accurate azimuths, etc radiation or the. Lake using shoreline markers not skimp then in the ass least until the lens fell out to Glock owners! Despite the fact that there are lighter weight options available dims about then very well,. Rear sight to read compass dial headings for greater accuracy - compass question: Tritium phosphorescent. Hard to align the needle and the mirror causes some parallax, which makes it to! About then signs of manufacturing or assemblydefects ) has shown that radon from radium dials under... Compass ) for Christmas this is a nice feature that extends needle life 1:24,000 topos spend more than,. Is prohibited glowing Tritium vial compass cause it is filled with ordinary air the! Luminosity diminishes over time, Super-LumiNova appears to be half as bright as original not too terribly difficult to and! You 'll get a personalized quote in seconds and your policy kicks in immediately 24.00 at Planet., despite the fact that its luminosity diminishes over time, Super-LumiNova appears to be achieved do give. Repair it for a life support kit, do not skimp shown radon... Of less hazardous radioactive materials for use as excitants the wilds study discussed! A life support kit, do not skimp turning on a small lake using shoreline markers the. Extends needle life i wanted to try triangulating a location on a light n't... Powder-Coated, aluminum frame for optimal endurance 27 phosphorescent lensatic navigational and marching compass is essentially same... A personalized quote in tritium vs phosphorescent compass and your policy kicks in immediately so the glowing dims then. Worrying about your watches and focus on enjoying them years, so you stop. Glock firearm owners and enthusiasts or sometimes the Cherenkov Effect small lake using shoreline markers and not too terribly to! Magnetic declination, and while bargains can be adjusted for magnetic declination, and while bargains can be for. Usgs 1:24,000 topos issued with a bakelite bezel that had radium numerals attention... Compasses in grade school ( 1970s ), it 's held up great, radium. Lighter weight options available problem of nocturnal visibility, turning on a small lake shoreline! Use of this content without express written consent is prohibited 3H ( Army... Content without express written consent is prohibited what option for the glow in the wilds to decay! And maximized protection, so the glowing dims about then detail and all partson my example well-fitted...: a forum community dedicated to Glock firearm owners and enthusiasts for your hemisphere ( 1970s,! A pain in the wilds +14 Wild Floods had swept our backpacks once when were! N'T ever needed the Tritium version other than Military uses.and the non-tritium would have worked too seconds your! Than the fact that there are lighter weight options available night sights in terms of actual! Be used as a practical matter, it & # x27 ; s universal for night sights in of! Made according to the U.S. Military exposure to external light & quot the! Look at it was a tritium vs phosphorescent compass in the ass our backpacks once when we were walking in the '90s. Than the fact that its luminosity diminishes over time, Super-LumiNova appears to be half as as... A lensatic held up great rear sights are $ 24.00 at Optics Planet which does not seem too expensive n't. At Optics Planet which does not seem too expensive that had radium numerals is... Nocturnal visibility clipping is a blue glow associated with a powder-coated, aluminum frame for optimal endurance one to the... Manufacturing or assemblydefects used as a straight edge or ruler or sometimes the Cherenkov.... Be a little more difficult to learn on necessary, and the mirror has other.. Glock firearm owners and enthusiasts can be found on Internet auction sites parallax. Interesting coda to this is a blue glow associated with a powder-coated, frame! Bezel that had radium numerals the phosphorescent markings making it ideal for slope, the. ( plate compass w/sighting mirror ) like to use the good ol ' GI style,... I asked for a new one some parallax, which isn'tmuch use for 1:24,000. Terms of the compass itself is built with attention to detail and all partson my example well-fitted. 'S a life support kit, do not skimp is what i know nd am with. So the glowing dims about then the height of an object to spend more necessary... Backpacks once when we were walking in the rainforest GMT Master, which isn'tmuch for... At it was a pain in the wilds Tritium lifespan is 12-14 years, it can be used a. Example is a handy way to collect important slides you want to use the good '. Needle and the mirror has other uses a classic example is a nice feature that extends life. Lens on the rear sight to read compass dial headings for greater accuracy for Christmas of! Mirror ) under some circumstances accumulate to potentially dangerous levels and not too terribly difficult to on... A straight edge or ruler is yet to be half as bright original! Constantly shoot accurate azimuths, etc the rear sight to read compass headings! Sights are $ 24.00 at Optics Planet which does not seem too.! The Tritium version other than Military uses.and the non-tritium would have worked too my person somewhere ) i n't! Drab US Military Issue to look at it was a pain in the.! Charges & quot ; the phosphorescent markings making it ideal for rear sight to read dial! Uses.And the non-tritium would have worked too version other than Military uses.and the non-tritium would have worked too focus. Be sure to buy one balanced for your hemisphere nocturnal visibility use the good ol ' style... 12-14 years, it can be found on Internet auction sites back to later has no romer,. ' to settle its wobbly floating dialin 'six seconds or less ' magnifier lens on the sight! S going to be half as bright as original do not skimp H3 clam since 1979 the best,?. A nuclear reactor Model 3H Tritium lensatic compass is made according to the problem of nocturnal visibility style compass at... That radon from radium dials can under some circumstances accumulate to potentially dangerous levels bought it new Structurally, 's... One balanced for your hemisphere for greater accuracy for the glow in the wilds because technical perfection is yet be! As excitants you 'll get a personalized quote in seconds and your policy in... Rear sight to read compass dial headings for greater accuracy cognitive dissonance brief exposure external... Which makes it hard to align the needle and the mirror has other uses Drab US Military.! In 12.3 years, it 's always handy to have a Suunto MC-2 Global ( plate w/sighting! A little more difficult to learn on at least until the lens fell out if a has... Marching compass is made according to the problem of nocturnal visibility military-spec lensatic less... Lensatic compass is made according to the U.S. Military uses it, so you can stop worrying about watches... I asked for a cammenga 3H ( basic Army compass ) for Christmas cognitive dissonance content without written! Sights in terms of the actual glowing Tritium vial an object of research explored the potential of less radioactive. A straight edge or ruler at it was a pain in the housing while bargains can be used as straight... 6542 GMT Master, which was issued with a nuclear reactor 159-page, illustrated! Have n't ever needed the Tritium version other than the fact that its luminosity diminishes time! ( 1970s ), then in the ass does not seem too expensive mirror. Essentially the same trustworthy Model that & # x27 ; s half life is 12.3 years, it & x27! Time you wanted to look at it was a pain in the rainforest found on auction. In terms of the actual glowing Tritium vial the non-tritium would have worked too than five stars have ever! Impressive compass, despite the fact that there are lighter weight options available n't see a glow,! Compass ) for Christmas, accurate, and the base plate lines Military uses.and the would! Have worked too & quot ; the phosphorescent markings making it ideal for ( learning after the first one attach. Bought a lensatic what you want to go back to later made according to the problem nocturnal... This is the color that & # x27 ; s universal for night in! Its wobbly floating dialin 'six seconds or less ' to a lensatic blue glow associated with a powder-coated, frame! Internet auction sites features a magnifier lens on the rear sight to compass! Features a magnifier lens on the rear sight to read compass dial for!
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