Binoculars; Field-glasses; Telescopes; Astronometric measuring machines and instruments; Camera lens mounts; Camera mounts and supports; Microphone stands; Microscopes and their parts; Monocular frames; Tripods
Binoculars; Field-glasses; Telescopes; Astronometric measuring machines and instruments; Camera lens mounts; Camera mounts and supports; Microphone stands; Microscopes and their parts; Monocular frames; Tripods