Binoculars; Monoculars; Telescopes; Distance measuring apparatus; Equatorial telescopes; Field-glasses; Hunting binoculars; Lenses for telescopes; Meridian transit telescopes; Night vision goggles; Optical or telescopic lens sights; Reflecting telescopes; Spotting scopes; Telescopic lens sights; Telescopic riflescopes; Telescopic sights; Telescopic sights for artillery; Telescopic sights for firearms; Thermal imaging cameras; Tripods