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 6240-01-491-8834
NSN 4140-00-186-3062
NSN 5945-00-947-9595
NSN 6610-00-911-8296
NSN 5985-01-295-7236
NSN 6130-01-592-6285
NSN 4140-00-679-9512
NSN 6645-00-527-7258
NSN 5985-01-174-1237
NSN 6150-01-516-9305
NSN 6650-00-601-8944
NSN 6645-01-411-5657