weaponry founded 1992 holland michigan u.s. headquarters dearborn mi usa area served worldwide products lensatic compass ; easyloader ; easymag ; beta blades number of employees 40 july 2009 website cammenga.com cammenga is an outdoors products company known chiefly for producing navigation equipment under contract for u.s. military forces . they are the official supplier of the m 1950 lensatic field compass issued to u.s. army and marine corps infantry and artillery units . contents 1 profile 2 manufacturing facility 3 u.s. m 1950 3h lensatic compass 4 see also 5 references 6 external links profile edit cammenga was founded in 1992 by a group of investors to produce the m 1950 3h lensatic compass to the u.s. military . since 1992 cammenga has held the u.s. military contract for the m 1950 . the firm develops manufactures and distributes a wide variety of products to military law enforcement and commercial markets around the world including land navigation instruments firearm sighting and loading systems firearm magazines tritium knives and other tritium light source integration services . the company provides development assistance in tritium self luminous lighting products nrc approval processing tritium capsule assembly and installation procedures and product testing . the company is iso 9001 2000 certified . manufacturing facility edit cammenga s primary production plant includes a clean room environment for the assembly and testing of tritium products and critical devices . the company provides cammenga assists with tritium product design nrc approval processing tritium installation and product testing . u.s. m 1950 3h lensatic compass edit cammenga lensatic compass the m 1950 u.s. military lensatic field compass with self luminous lighting designated the model 3h by cammenga is fitted with self luminous tritium vial lighting . under u.s. milspec performance criteria ten pre production samples of the m 1950 are required to meet a battery of performance durability and accuracy standards . 1 this includes an overall inherent accuracy standard of or 40 mils 2.25 degrees from actual magnetic azimuth ; 1 2 a tritium illumination test ; 3 and a shock or impact test in which samples of the m 1950 are tested dropping the compass from a height of 90 cm 35 in . on a solid surface covered with 10 cm 4 in . of plastic covered sand 4 followed by testing to ensure performance within specified accuracy standards . 1 5 a water leakage test is also performed . 1 6 see also edit compass navigation outdoors references edit a b c d article mil prf 10436n rev. 31 october 2003 washington d.c. u.s. dept. of defense u.s. mil prf 10436n performance specification compass magnetic unmounted 31 oct 2003 3.4.9.3 . compass error . the error in magnetic azimuth including that caused by pivot friction shall not be greater than 40 mils see 4.4.1.8 . 3.4.9.4 friction error . the error caused by friction between the pivot supporting the dial and its bearing shall not be greater than 20 mils see 4.4.1.9.3 . u.s. mil prf 10436n performance specification 3.4.10 illumination . the compass shall have internal self exciting light sources of constant luminosity for sighting and reading . u.s. mil prf 10436n performance specification 4.4.3.4 durability . the compass in the open configuration if applicable shall be dropped from a height of 90 cm alternately on its face side and bottom onto a solid surface covered with 10 cm of 40 grit kiln dried sand . the sand may be covered with a sheet of plastic not greater than 2 mils thick . mil prf 10436n performance specification 4.4.3.4 durability . e. after each drop alternating targets sight the compass on one of three targets of known magnetic azimuths approximately 120 apart and record each reading . f. after every tenth drop test the compass for friction error as defined in 4.4.1.9.3 mil prf 10436n performance specification 4.4.2.1 water leakage . the complete compass shall be submerged in 300 ml of distilled or deionized water for 24 hours at 23 5 c. the compass shall be removed from the water and examined for water leakage . if there is evidence of water in the compass bowl at the completion of the test it shall constitute failure of this test . external links edit cammenga homepage visit also the online compass museum retrieved from https en.wikipedia.org w index.php title cammenga & oldid 683832622 categories companies based in michigannavigational equipment manufacturershidden categories pages using infobox company with unsupported parameters navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 2 october 2015 at 20 18 . text is available under the creative commons attribution sharealike license ; 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