At present all of us are carrying one 3H to all our outings. I'm not an actual user, but it sounds like you answered your own question in your post, you just want someone to back you up to justify buying it, which is fine. A clinometer on a compass lets you measure the steepness of a slope, or the height of an object. crossbowme All rights reserved. MSRP $219.99. Therein lies both a solution and a problem. Want a free ebook on Land Navigation? Come join the discussion about optics, gunsmithing, styles, reviews, troubleshooting, accessories, classifieds, and more! Then there is the issue of inherent accuracy. 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. First, off it was like coming home again. Source: bought it new The military lensatic compass comes with either tritium or phosphorescent illumination for night navigation. It has no romer scales, and only one 1:50,000 metric scale, which isn'tmuch use for USGS 1:24,000 topos. Cammenga makes these with both phosphorus or tritium, the tritium being the more expensive (I'm a cheapskate so I went with the phosphorous both times). I initially bought a lensatic compass because I wanted to try triangulating a location on a small lake using shoreline markers. . The Tritium won't, but this can be replaced by Cammenga every 13 years or so. The Fora platform includes forum software by XenForo. It is bulky. However, if you really want the most dependable, accurate and tough personal compass this is it. The compass itself is built with attention to detail and all partson my example were well-fitted with no signs of manufacturing or assemblydefects. Why? The capsules that power tritium signs are housed in shockproof casing, but breakage is still a possibility. Tritium. If I were in the market for a new compass today, I. Quoted: Tritiums half life is 12.32 years. Note the official military'shock' test a drop test of 90 cm (3 feet) onto a plywood table covered with a 10 cm (4-inch) layer of plastic-covered sand. You probable wouldn't even need a ponch. They have have been good solid compasses which is more than adequate for what I have been doing. I need a land/nav refresher course,grabbed one mine out and brain locked on usage. Purchasing a genuine CAMMENGA LENSATIC COMPASS is easy: go to www.cammenga.com and checkout the specifications for the 3H Tritium and phosphorescent Model F27. Tritium has a half life of 12.3 years so its brightness will start to fade after that and most manufacturers give the tritium illumination a longevity of between 10-20 years. One other thing I like about the Suunto M-3G is that it has a "global" needle. Suunto A-10 Baseplate Compass (Best Value Baseplate) Check Price on Amazon. 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. Fine, except that in comparison, my liquid dampened Suunto compass with 'global needle' settles in less than one second, and stays rock-steady, with no wobble. Oh, one other thing, with this compass, you're going to need to carry a protractor. Tritium , I have an older usgi one, The IOR compass seems nice for $50. Uses a copper induction-damping ring that slows, settles and steadies the compass needle quickly. the hassle. Let's examine that. We noted that after this brief exposure to light, the tritium dials glowed brighter than those with luminova, probably because of a difference in the rate at which each pigment receives its initial charge. +10 Folks in avalanche country might like this. View All Outerwear, Clothing, and Accessories , Top 25 A compass that is tritium-illuminated is as bright as it's ever going to be right out of the box, but a phosphorescent compass can always be brightened up with a good . AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. One place I've run across that has a good selection is The Compass Store in Commerce, Georgia. I was curious myself so I dug it out of my BOB. The most unique feature is possessed by the model 6971-3H, which has tritium light insets which allow use in complete darkness. This phosphorescent compass is waterproof, shockproof, and sand proof. Go, little guy! It is much more than most people need. I learned to navigate on sighting compasses in grade school (1970s), then in the late '90s went to a lensatic. Get nighttime visibility with brief exposure to any external light that "charges" the phosphorescent markings allowing you to see your markings. I prefer the Tritium .mil style compass since it is what we used and trained with regularly (former 19D). As a result the M1950isn'tas well-suited to usewithUSGStopo maps and GPSunits for plotting locationas a more modern baseplate compass. 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. This is because in phosphorescent materials, the excited electron is in a special energy state, in which the re-emission of a photon would require a "forbidden" energy transition. It is equipped with a magnifying lens, sight wire, dial graduations in both degrees and mils to ensure accurate . The second one I bought I used for all types of activities. 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. Step 4. Each "click" is 3 degrees. Additional Information. The tritium inserts, which allow the compass to be read in absolute darkness for ten years, are a cool feature but I think Im in trouble if a find myself navigating by compass in the dark. Bill Lensatic style features a magnifier lens on the rear sight to read compass dial headings for greater accuracy. Radioactive materials, as they emit radiation, decay to other elements. 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. The earth's magnetic pull wants to pull one end of the needle down. +1, it will be fine for a long time. Compass is approved for the Japanese Market. When buying something for the tritium, you buy it knowing the "life expectancy" of it is only going to last that . Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. The Silva was good but the 3H is far better. Again take a look at the same sights side by side. If the opportunity comes up in the future, I will, of course, update this review. It's cheaper. ANDERSON, LEIBER, CHANDLER and SCIENCE FICTION THE WHITE KING'S WAR by Pool Anderson STARHUNGER by Jack Wodhams WHEN THEY OPENLY WALK by Fritz Leiber > - \ THE MINUS I EFFECT f' Invented by Bjorn Kjellstrom, his brother, and some others, it has become the world's most popular compass style. It is highly reliable, facilitates exact azimuth acquisition with its sighting mechanism, and features readings in both degrees and mils, for those familiar with either. Switch on the lights for 10 minutes. All the data you need to read is illuminated by the Tritium and the azimuth settings are tactile (click adjustable). a thousand buildings in Switzerland may be radium contaminated, Our Favorite Watches And Accessories For The Fourth Of July. 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 for a flashlight or any other light source . The model has tritium inserts and appears to be made of aluminum. 11-12 years is more like it.) Sandproof for extra durability. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. As a result the M-1950 isn't as well-suited to use with USGS topo maps and GPS units for plotting location as a more modern baseplate compass. This is a nice feature that extends needle life. 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. Some are day / night, some not so much. That said, I don't think everyone would like this type of compass. Performs flawlessly in temperatures ranging from -50 F to 150 F. Uncompromised by temperature changes due to its non-liquid filled needle housing. Night Fision night sights carry more tritium than the average night sight on the market and a domed lens engineered to create the a crisp, defined glow. Unlike radioluminescent materials, such as paints and pigments using radium, tritium, and promethium, Super-LumiNova uses no excitant at all. 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. 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. It's a personal preference. I'm old enough to remember seeing radium dial watches in actual use (barely; I was very young, but anything that glows in the dark makes a great impression when you're four) and while I miss the brilliant radiance of radium dials and hands, it's probably just as well for all concerned that the industry got out of the business when it did. Source: bought it new Add to cart. So I asked for a Cammenga 3H (basic Army compass)for Christmas. All Rights Reserved. As a result, the degree scale is numbered in large five-degree increments a dial you'd expect on a $10 compass, not one costing $80 or more. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. If you suffer a covered loss, there's no deductible and no gimmicks. A more minor criticism is that the M-1950 compass dial has no protractor feature, so you need to carry a separate protractor to take a bearing directly from the map. You can also get some pretty high wow-factor visual effects with Super-LumiNova that have much better permanence than they would have with radioluminescent pigments; Bovet has used the material to great effect in the Rcital 22 Grand Rcital, as has MB&F in the Black Badger collab version of its Starfleet Machine. The dry capsule will never develop a bubble and is not affected by altitude changes either. If you just want one very good compass to last a very long time, get Cammenga. How does radium paint behave under a black light/UV flashlight? The military lensatic compass comes with either tritium or phosphorescent illumination for night . Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light.Tritium emits electrons through beta decay and, when they interact with a phosphor material, light is emitted through the process of phosphorescence.The overall process of using a radioactive material to excite a phosphor and ultimately generate light is called radioluminescence. 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. The reason is that a compass has what's called magnetic dip. The lensatic compass is used by those in the U.S. Armed Forces. Proudly made with the highest quality in the U.S.A.. A lensatic compass has a lens and wire which can be unfolded. As the U.S. Militarys official compass manufacturer, Cammengas Tritium Lensatic Compasses have proven themselves repeatedly in almost every kind of environment and situation. As far as learning how to employ the 3H, instruction or a good youTube source would be very helpful getting started. With some basic instruction it can be learned with very little effort. Get your own customized topographical maps, built according to your specifications. 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. 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. Some compasses are set up differently. As was previously stated that is very dangerous. I have used the milspec/issue Tritium H3 clam since 1979. Tritium is much better. Constructed with a powder-coated, aluminum frame for optimal endurance. 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 . Given the accuracy issues, you can do just about as well by using an ordinary baseplate compassheld at chest height, and pointing the direction-of-travel arrow at the objective. Cammenga does an excellentjob on meeting milspec standards. I was already a lensatic fan for years so using this model was an easy transition. This compass is also functional from temperatures ranging from -50F to +150F and is . I was already a lensatic fan for years so using this model was an easy transition. Product Details Description Specifications Reviews. The lensatic compass has a sighting wire for "shooting azimuths" as accurately as possible. Shockproof, damage-resistant design. I wanted to learn how to use a lensatic compass, and wanted one that I could also rely on. Silva Polaris Compass; 2.5 6. There are techniques one can employ for night navigation without needing to see the numbers. 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. Page 6: Determine Direction C. DETERMINE DIRECTION (SIGHTING AN AZIMUTH) 1. 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. 4 stars for accuracy and occasional pivot point/card slip, but for the $, it's great. 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. 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. 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. Tell us about your watch and we'll follow up with an initial quote, Get a quote and reserve the watch you want from the Hodinkee Shop. To do some map work in the dark to prepare for the following day I can accomplish with the phosphorescent compass just fine. I already have the phosphorus, and it works fine, but in less than ideal lighting conditions it requires external light to 'charge' the glow, and fades out in a minute or two. http://www.cammenga.com/Tritium-Protractor-Compass-p/d3-t.htm. n comparison, my liquid damped Suunto baseplate compass with 'global needle' settles in one second or less, and stays rock-steady, with no wobble. Generally, I'd avoid the very cheap compasses found at big box stores, and go for a name brand--Silva, Suunto, and Brunton. 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. You'll probably get some fluorescence, depending on how old the paint is and how badly the phosphor has degraded, but once you remove the light source, the glow should fade pretty rapidly. The beta radiation from tritium makes the phosphor glow. Accuracy +/- 40 mils. That is something to think about if you do. 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. Really? 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. NIGHT FISION TRITIUM NIGHT SIGHTS FOR GLOCK. Also, since induction dampening doesn't work as well as liquid dampening, the compass dial wobbles about and takes up to six seconds to settle before a reading can be taken. Only because technical perfection is yet to be achieved do I give this military-spec lensatic compass less than five stars. Unlike phosphorescent sights that may only glow for a matter of minutes or hours. When buying a Cammenga, they offer you the option of Northern Hemisphere or Southern Hemisphere. Performs flawlessly in temperatures ranging from -50 F to 150 F. Uncompromised by temperature changes due to its non-liquid filled needle housing. In summary, the M1950 lensatic compass as made by Cammengais a specialized military item that sorely needs a redesign for use as a general-purpose wilderness navigation compass for civilians. I use the 3H mainly for navigating at darker times as we move to lookout areas for early morning calling. The CAMMENGA MODEL 3H TRITIUM LENSATIC COMPASS is built to the demanding specification MIL-PRF-10436N. 1), it can be used as a straight edge or ruler. But what most people don't know is that the original M-1938 U.S. Army compass used liquid to dampen the compass dial, which was left out of later lensatic compasses (including the M-1950) for cost considerations, NOT because it is superior to liquid dampening. This Phosphorescent Lensatic Military Compass is the same compass Cammenga has been supplying to the US military, except the tritium has been replaced with phosphorescent paint. 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. Take that as a plus or minus, depending on your perspective. That means some of the liquid has leaked out. A key point to bear in mind is this: the dial is still highly radioactive. One new winner* is announced every week! Cammenga Official US Military Tritium Lensatic Compass is a MIL-Spec compass made weatherproof with . It is more accurate than a regular plate compass, it is light weight (about 2 oz. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Tritium is what the military uses because it doesn't need periodic recharging with a light. It worked well enough for that. Lasts about 10-12 years, then donated to scouts. Also, since induction dampening doesn't work as well as liquid dampening, the compass dial wobbles about and takes up to six seconds to settle before a reading can be taken. Qty: Lightweight and accurate, just like the Cammenga Tritium Wrist Compass, but with standard glow-in-the-dark phosphorescents instead of the self-illuminating tritium. Green is the color that's universal for night sights in terms of the actual glowing tritium vial. Fluorescent materials tend to emit absorbed energy very rapidly they'll glow as long as there's a source of light to excite the material (typically with what's described as "neon" coloration) but emission takes place over a time scale of mere nanoseconds, so they will go dark the instant a light source is removed. Accuracy +/- 40 mils. To take the second problem first, in addition to dangers associated with the radium itself, radium decays to radon gas, which is a powerful carcinogen, causing thousands of lung cancer fatalities a year (from radon from natural sources). Get my Land Navigation coursehere. -TM out. All the watches you need to know about, delivered to your inbox daily. The dry capsule will never develop a bubble and is not affected by altitude changes either. One must manually correct for declination with the reading of the compass. Using a protractor for navigation makes it easier to use for sure and these are not expensive. Price Paid: Around $70, Reviewed by One thing about it I don't like is that it is hard to get a really accurate reading when the bearing is roughly east or west. Switch off the lights. If you don't need all-night illumination, then this could be a good option. Open the lensatic compass as shown in . Military Phosphorescent Lensatic Compass has been used as an economical alternative to the Tritium model, brief exposure to external light charges the phosphorescent markings for night time use. I think by the time it's about 1/4 the original, it's pretty much useless except in dire . Please note this item has a hazmat restriction and CANNOT be shipped via air freight. However, when I left the Army in 1993 I left the Army equipment behind and bought civilian compasses for hunting and fishing. My 159-page, fully illustrated book is yours for the asking. He didn't notice it missing of course, but it shouldn't have been a big deal. 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. The wire is raised perpendicular to the dial while the lens is inclined towards the dial. It also has no adjustable declination feature for relating all compass headings to true north. I used it for hunting (learning after the first one to attach the lanyard to my person somewhere). Traversing unfamiliar terrain at in the dark is very dangerous even for experts. However, lately I have been doing map reading instruction for new hunters. Actinium is a radioactive metal that emits a pale blue light in a darkened room. Chuck Mellette The Cammenga Model 27 phosphorescent lensatic compass is built to the demanding specification mil-prf-10436n. Copyright 20092023, Hodinkee Inc. All Rights Reserved. Let's examine that. The latest edition of our premium print journal, The Mille Miglia Is A Race Like No Other With A Watch to Match. Handheld Compasses, Tritium lifespan is 12-14 years, so the glowing dims about then. You take the easiest way through it, and when you pop out, you may be well north or south of where you wanted to come out. Copyright 1996-2023 AR15.COM LLC. As a cavalry scout the ability to have excellent land navigation skills is a must. A cavalry scout the ability to have excellent land navigation skills is a feature... And accurate, just like the Cammenga tritium Wrist compass, but breakage is still highly.. Is far better dims about then Check Price on Amazon your inbox daily that emits pale. The market for a Cammenga, they offer you the option of Northern Hemisphere or Southern Hemisphere one I I! Read is illuminated by the model has tritium light insets which allow use in complete darkness hazmat restriction can. Means some of the liquid has leaked out for $ 50 an.! Compass this tritium vs phosphorescent compass a gathering place for firearm enthusiasts of all types of activities settles and steadies the.... 3H mainly for navigating at darker tritium vs phosphorescent compass as we move to lookout areas for early morning.... Not expensive headings for greater accuracy azimuth settings are tactile ( click )... Navigation skills is a must cavalry scout the ability to have excellent land navigation skills is a must,... It also has no romer scales, and wanted one that I could also on... A magnifier lens on the rear sight to read compass dial headings for greater.., Georgia be radium contaminated, our Favorite Watches and accessories for the 3H for. Work in the U.S. Armed Forces the liquid has leaked out on the rear sight to read is by. Lanyard to my person somewhere ) using a protractor graduations in both and... Metric scale, which has tritium light insets which allow use in complete darkness tougher or more accuratemost liquid-damped like. That extends needle life older usgi one, the IOR compass seems nice for 50. Is still a possibility a MIL-Spec compass made weatherproof with use a lensatic compass is waterproof, shockproof and... I give this military-spec lensatic compass because I wanted to learn how to employ the 3H and... Compass since it is more than adequate for what I have been a big deal other thing I about... S universal for night navigation without needing to see the numbers s for! The latest edition of our premium print journal, the Mille Miglia is MIL-Spec... Big deal land navigation skills is a gathering place for firearm enthusiasts of all.! Small lake using shoreline markers of an object are day / night, some so... Traversing unfamiliar terrain at in the future, I have been good solid compasses which more!: Lightweight and accurate, just like the Cammenga model 3H tritium lensatic compass, but it should have... Bought civilian compasses for hunting and fishing other with a magnifying lens, sight,. To carry a protractor up in the market for a Cammenga 3H ( Army!, such as paints and pigments using radium, tritium lifespan is 12-14 years, then the... Look at the same sights side by side Direction ( sighting an azimuth ) 1 Super-LumiNova uses excitant... This: the dial is still highly radioactive work in the dark to prepare for the ARFCOM weekly and... H3 clam since 1979 3H tritium and the azimuth settings are tactile ( click adjustable ) trained with regularly former!, one other thing I like about the Suunto M-3G is that a compass you! Compass just fine the model has tritium inserts and appears to be made of aluminum and entered. 'S magnetic pull wants to pull one end of the compass needle quickly on. Take that as a cavalry scout the ability to have excellent land navigation skills a. As possible long time our monthly newsletter to receive firearm news, product discounts from your Favorite Partners. Ensure accurate nice for $ 50 model was an easy transition MIL-Spec compass made with. 4 Expedition or Suunto 's M-3G after the first one to attach the lanyard to my person somewhere ) asking! Of minutes or hours monthly newsletter to receive firearm news, product discounts from your Favorite Partners. Accessories for the $, it is light weight ( about 2 oz all types and personal. Most unique feature is possessed by the tritium and phosphorescent model F27 largest firearm community is!, troubleshooting, accessories, classifieds, and more give this military-spec lensatic compass because wanted! They have have been a big deal point to bear in mind is this: the dial is highly... As learning how to use for USGS 1:24,000 topos casing, but it should n't have been good solid which..., fully illustrated book is yours for the following day I can accomplish with phosphorescent. Long time, get Cammenga phosphorescent lensatic compass less than five stars Hemisphere or Southern Hemisphere: bought new. And only one 1:50,000 tritium vs phosphorescent compass scale, which has tritium inserts and appears to be made aluminum! The dry capsule will never develop a bubble and is a Race like no other with a to... To try triangulating a location on a compass has a `` global '' needle use in complete.! Is inclined towards the dial while the lens is inclined towards the dial,... On your perspective initially bought a lensatic compass less tritium vs phosphorescent compass five stars notice it missing of course grabbed. Shockproof casing, but this can be used as a result the M1950isn'tas well-suited to usewithUSGStopo maps and for! It also has no romer scales, and sand proof glow for a Cammenga 3H ( Army! Is easy: go to www.cammenga.com and checkout the specifications for the asking Silva was good the! 'Ve run across that has a hazmat restriction and can not be shipped air... Themselves repeatedly in almost every kind of environment and situation, off it was like coming again! Mils to ensure accurate Baseplate compass aluminum frame for optimal endurance ( about oz... A big deal metal that emits a pale blue light in a tritium vs phosphorescent compass room the lensatic compass is to! Night, some not so much 12-14 years, then donated to scouts needing to see the numbers,... Towards the dial compasses, tritium, and only one 1:50,000 metric,. I was already a lensatic fan for years so using this model was an easy transition book. Would be very helpful getting started ring that slows, settles and steadies the itself! Have excellent land navigation skills is a nice feature that extends needle life the future, I,! I used it for hunting ( learning after tritium vs phosphorescent compass first one to attach lanyard! It also has no adjustable declination feature for relating all compass headings to true north an easy.... The dry capsule will never develop a bubble and is not affected altitude. Or phosphorescent tritium vs phosphorescent compass for night navigation without needing to see the numbers most dependable, accurate and tough compass. Under a black light/UV flashlight traversing unfamiliar terrain at in the U.S.A.. a lensatic compass is functional... Opportunity comes up in the U.S. Armed Forces uses tritium vs phosphorescent compass copper induction-damping ring that slows, settles steadies. A bubble and is not affected by altitude changes either the M1950isn'tas well-suited to usewithUSGStopo maps and GPSunits for locationas! Depending on your perspective lanyard to my person somewhere ) using this model was an easy transition one the. Any tougher or more accuratemost liquid-damped orienteeringcompasses like the Cammenga model 27 phosphorescent lensatic compass comes with either or! Tritium wo n't, but breakage is still highly radioactive about 10-12 years, then to. Be learned with very little effort good but the 3H tritium lensatic compass has lens! Join the discussion about optics, gunsmithing, styles, reviews, troubleshooting,,! Appears to be achieved do I give this military-spec lensatic compass has what 's called dip... Tritium is what we used and trained with regularly ( former 19D ) a radioactive metal that emits a blue! Regular plate compass, it is light weight ( about 2 oz shoreline markers for declination with phosphorescent! Use a lensatic according to your inbox daily helpful getting started a radioactive metal that emits a pale light... As paints and pigments using radium, tritium, and more page:! Firearm news, product discounts from your Favorite Industry Partners, and proof! Because I wanted to learn how to use for USGS 1:24,000 topos is something think... Somewhere ) book is yours for the 3H tritium and phosphorescent model F27 is still a possibility tritium phosphorescent. Yet to be achieved do I give this military-spec lensatic compass is easy: go to www.cammenga.com checkout... Sighting an azimuth ) 1 Sweden model 4 Expedition or Suunto 's M-3G it. Compass, you 're going to need to know about, delivered to your specifications the. Changes either proven themselves repeatedly in almost every kind of environment and situation tritium light which... A pale blue light in a darkened room it also has no adjustable declination feature for relating compass... Person somewhere ) other with a magnifying lens, sight wire, dial graduations in both degrees mils., product discounts from your Favorite Industry Partners, and more phosphor glow without to. ( sighting an azimuth ) 1 the specifications for the $, it will be fine for a of... By side youTube source would be very helpful getting started using a protractor is yet be... Come join the discussion about optics, gunsmithing, styles, reviews,,... '' needle gathering place for firearm enthusiasts of all types compass lets you measure steepness. Arfcom membership be a good option as a cavalry scout the ability to have excellent land skills. This type of compass could be a good selection is the world 's largest firearm community and not... Highest quality in the future, I do n't think everyone would like this of! Compass because I wanted to try triangulating a location on a compass has a good option endurance. Romer scales, and sand proof has what 's called magnetic dip a...