My two US Army elbow telescopes M17 are slightly different. I live within a half hour of Sikorsky aircraft that makes helicopters, and see military helicopters fly by all the time, and frequently find stuff related to helicopters at the local flea market, so it all now makes perfect sense. national stock number, though I knew it wasn’t, and that brought up national stock number 4920-0 that had 3493367 as being a listed part number buried within that NSN, listing this as basically being an opto electric target test kit to check the aim or harmonization or boresighting of an aircraft armament system when testing it in a simulated way on the ground, and specifically related to the H1 program to upgrade AH-12 Viper and UH1Y Venom combat helicopters. Eventually I tried punching in that part number 3493367 as being a The SABE part number turned up nothing the “borescope P/N on the case turned up nothing the contract number turned up nothing and even the part number on the device with or without “borescope” turned up nothing. TheĪnufacturer) contractor number was a dead end because Ibration activity of the Naval Surface Warfare Program, and perhaps the Hughes Aircraft Co sticker. In fact the only easy thing was the sticker “ Since the case and optics were covered in part numbers and contract numbers and such, and marked as being a borescope, and with the 2003 date not that old, I figured tracking everything down would be a cake walk. I picked this up at my local flea market for $25 and figured that to be the price of the military case, with the odd optics inside being basically free. I have fairly developed skills, and view it more as an entertaining challenge than drudgery. Sometimes I view fun with optics as being in the research.
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