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This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
Leupold & Stevens, Inc. is an American manufacturer of telescopic sights, red dot sights, binoculars, rangefinders, spotting scopes, and eyewear located in Beaverton, Oregon, United States. The company, started in 1907, is on its fifth generation of family ownership.
Osborne also designed the photo-recording transit for making panoramic records of forest conditions, as well as a collapsible water-bag knapsack for firefighting (patented in the US in 1935). Many fire finders were manufactured from 1920 through 1935, but the manufacturer, Leupold & Stevens, Inc., stopped production of replacement parts after 1975.
Stereoscopic rangefinder atop the bridge of the German cruiser Admiral Graf Spee Portable stereoscopic rangefinder with binoculars from WWII. A stereoscopic rangefinder or stereoscopic telemeter [1] is an optical device that measures distance from the observer to a target, using the observer's capability of binocular vision.
Coincidence rangefinders work through the principle of triangulation. In the pictured example, triangulation can be used to determine the range of the ship 𝑑.The position of the lenses A and B are known, and the angle of the lenses α and/or β is set by the operator so that both are aimed at the target.
The gunner takes position in front of and below the commander and is provided with a single, forward-facing observation periscope and the main sights; these consist of a Turmentfernungsmesser (TEM) 1A stereoscopic rangefinder (1,720 mm basis length with a coincidence mode) which has a selectable ×8 or ×16 magnification and is linked with the ...
The optic has two standard reticles: both are a cross, feature a range finder out to 600 m (656 yd) for 5.56x45 and 800 m (875 yd) for 7.62x51, where they differ is in the bulletdrop design, where the one called CX5395/CX5396 uses circles to denote the range, while the other called CX5455/CX5456 uses lines and also features lines for windage.
PRP-4 "Nard" (Ob'yekt 779, 1V121) The replacement for the PRP-3 "Val", it entered service with the Soviet Army in the 1980s. It was an improved PRP-3 with one 1A30M and two R-173 radios, a 1G25-1/1G13/KP-4 navigational system, a 1D11M-1 active pulsed laser range finder, a 1PN59 thermal vision device and a 1PN61 active pulsed night vision system ...