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 6220-01-437-5659
NSN 6645-01-430-4125
NSN 5930-01-159-4278
NSN 5895-00-644-5712
NSN 5999-00-233-6366
NSN 5920-01-025-9381
NSN 6135-00-826-4798
NSN 6110-00-958-3794
NSN 5990-01-558-4536
NSN 5930-01-590-1370
NSN 5960-01-367-0981
NSN 5910-01-422-3649