Altimeters; Batteries and battery chargers; Binoculars; Body-tubes for telescopes; Digital cameras; Directional compasses; Distance measuring apparatus; Equatorial telescopes; Field-glasses; Hunting binoculars; Illumination regulators; Laser rangefinders; Night vision goggles; Photographic cameras; Range finders for cameras; Rangefinders for golf; Reflectors for telescopes; Rifle scopes; Spotting scopes; Telescopes; Telescopic riflescopes; Telescopic sights; Telescopic sights for artillery; T...