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 5915-00-454-7746
NSN 5999-01-442-5667
NSN 5855-01-136-9532
NSN 6650-00-411-1403
NSN 6150-01-267-7693
NSN 6105-00-208-1803
NSN 6135-01-598-9889
NSN 5910-00-339-6340
NSN 6135-01-420-5907
NSN 6240-01-408-3797
NSN 5905-00-165-1777
NSN 5975-01-218-0451