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2. Swarovski Optik - Wikipedia

   en.wikipedia.org/wiki/Swarovski_Optik

   SWAROVSKI OPTIK, headquartered in Absam, Tyrol, Austria is part of the Swarovski group of companies. Founded in 1949, the Austrian company specialises in the development and manufacturing of long-range optical instruments in the premium segment of the market, including binoculars, telescopes (spotting scopes), rifle scopes, range finders and night sight devices.

3. Tower viewer - Wikipedia

   en.wikipedia.org/wiki/Tower_viewer

   One of Tower Optical's coin-operated binoculars in Utah Coin-operated binocular at Cape of Good Hope. A tower viewer [citation needed] is a telescope or pair of binoculars permanently mounted on a stalk.

4. Binoculars - Wikipedia

   en.wikipedia.org/wiki/Binoculars

   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.

5. Orion Telescopes & Binoculars - Wikipedia

   en.wikipedia.org/wiki/Orion_Telescopes_&_Binoculars

   Orion Telescopes & Binoculars was an American retail company that sold telescopes, binoculars and accessories online and in-store for astronomy and birdwatching. It was founded in 1975 and had corporate offices in Watsonville, California. [1] A large proportion of its products were manufactured by the Chinese company Synta for the Orion brand ...

6. Coincidence rangefinder - Wikipedia

   en.wikipedia.org/wiki/Coincidence_rangefinder

   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 ...

7. Night-vision device - Wikipedia

   en.wikipedia.org/wiki/Night-vision_device

   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 ...