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 6620-00-186-8220
NSN 5935-01-027-5351
NSN 5930-00-592-4841
NSN 6135-01-660-2840
NSN 6135-01-150-6916
NSN 6145-00-174-9344
NSN 5895-00-198-5537
NSN 5910-00-486-6075
NSN 5999-01-418-8351
NSN 6145-01-379-6140
NSN 4140-00-222-2186
NSN 5975-01-437-6699