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 6150-01-314-5816
NSN 5930-00-369-1645
NSN 5925-01-578-6869
NSN 6650-01-053-8726
NSN 6220-01-248-2984
NSN 7035-01-119-6271
NSN 5855-01-257-5338
NSN 6145-00-934-0331
NSN 4140-01-386-5630
NSN 6620-00-065-3235
NSN 6105-00-479-3830
NSN 5975-01-591-5969