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 5990-00-806-3556
NSN 4140-01-182-3495
NSN 6650-01-177-4398
NSN 5855-01-464-3152
NSN 6110-01-411-6608
NSN 6220-01-031-6919
NSN 5855-01-530-4147
NSN 2925-01-338-7126
NSN 5996-01-446-3939
NSN 7035-01-325-0536
NSN 5945-00-148-8285
NSN 5996-01-008-0704