A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 5925-01-503-7854
NSN 6650-01-414-6196
NSN 7035-01-660-2232
NSN 5999-00-473-3682
NSN 5910-01-112-1250
NSN 5915-01-331-8695
NSN 6320-01-006-6138
NSN 6110-01-649-3390
NSN 6145-01-611-6822
NSN 6645-00-030-8030
NSN 2925-01-577-9269
NSN 5975-01-513-3837