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 5920-01-233-1205
NSN 5960-01-260-7430
NSN 6650-00-150-6885
NSN 5910-01-618-6407
NSN 6620-01-536-7799
NSN 5975-00-788-7225
NSN 5930-00-223-0542
NSN 5975-01-468-9962
NSN 7035-00-177-1557
NSN 5935-01-034-5138
NSN 5895-01-227-6722
NSN 6620-01-067-0536