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 5960-00-011-9315
NSN 4140-00-478-6199
NSN 6135-00-542-6216
NSN 6610-01-252-8201
NSN 5835-00-155-1379
NSN 6650-01-024-9554
NSN 5935-01-422-2559
NSN 2925-01-244-3016
NSN 6320-01-426-1324
NSN 5910-01-419-8620
NSN 5935-00-679-9663
NSN 6240-00-729-9696