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Mounts for optical observation and monitoring instruments
Telescopes, measuring
Telescopes, monocular
Telescopes, stereoscopic
Telescopes, reflecting and refracting
Telescopes, prismatic
Radio telescopes
Telescopes, reading (cathetometers)
Telescopes, equatorial
Telescopes, self-collimating (collimators)
Telescopes, infrared
Telescopes, industrial, workshop and toolroom
Telescopes, laboratory
Telescopes, amateur
Periscopes, industrial
Periscopes, submarine
Telescope accessories
Periscope accessories
Binoculars, Galilean field
Binoculars, wide angle
Binoculars, prismatic
Binoculars, photographic
Binoculars, fixed and periscopic
Binoculars, infrared
Binoculars for marine or aviation use
Binoculars, tropicalised
Binoculars, pocket
Opera-glasses
Field glasses
Binocular accessories
Night vision equipment for photography, cinematography and television