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 5975-01-555-8413
NSN 5855-00-631-4565
NSN 6150-00-465-9437
NSN 5990-00-441-7974
NSN 5985-00-902-7954
NSN 6105-01-644-2044
NSN 5930-01-541-6264
NSN 5975-01-263-5809
NSN 4140-01-245-8866
NSN 5935-01-576-9779
NSN 6320-00-483-0451
NSN 6105-01-631-2918