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 5990-01-500-5412
NSN 5920-01-133-2667
NSN 6105-01-647-7266
NSN 6145-01-288-2154
NSN 5950-01-580-0598
NSN 5960-00-557-6951
NSN 6320-01-516-3836
NSN 5975-01-632-8816
NSN 5950-01-330-9256
NSN 6320-01-648-5538
NSN 5975-00-256-1486
NSN 6130-01-422-8736