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 6220-00-272-7497
NSN 5975-01-250-8016
NSN 6110-00-401-5554
NSN 5965-00-725-4453
NSN 5996-01-547-6179
NSN 6320-01-631-7828
NSN 5905-01-234-7936
NSN 5930-01-383-6204
NSN 5999-01-293-6413
NSN 4140-01-139-4041
NSN 5855-01-366-2429
NSN 6240-01-139-1066