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Coincidence rangefinders were important elements of fire control systems for long-range naval guns and land-based coastal artillery circa 1890–1960. They were also used in rangefinder cameras. A stereoscopic rangefinder looks similar, but has two eyepieces and uses a different principle, based on binocular vision. The two can normally be ...
Stadiametric rangefinding is used for surveying and in the telescopic sights of firearms, artillery pieces, or tank guns, as well as some binoculars and other optics. It is still widely used in long-range military sniping, but in many professional applications it is being replaced with microwave, infrared, or laser rangefinding methods ...
Hand-held binoculars range from small 3 × 10 Galilean opera glasses, used in theaters, to glasses with 7 to 12 times magnification and 30 to 50 mm diameter objectives for typical outdoor use. Compact or pocket binoculars are small light binoculars suitable for daytime use.
1PN50 refractor-based night observation binoculars. [85] 1PN51 reflector-based night sight for a range of small arms and grenade launchers. [86] 1PN51-2 reflector-based night sight for the RPG-29. [87] 1PN58 refractor-based night sight for a range of small arms and grenade launchers. [88] 1PN93-2 reflector-based night sight for the RPG-7D3, see ...
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Binocular disparity refers to the difference in image location of an object seen by the left and right eyes, resulting from the eyes' horizontal separation . The mind uses binocular disparity to extract depth information from the two-dimensional retinal images in stereopsis .
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