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 2925-01-334-7122
NSN 5985-01-078-6821
NSN 7035-00-445-9657
NSN 6220-01-499-4750
NSN 6130-01-433-2215
NSN 6610-01-560-5153
NSN 5925-00-186-8669
NSN 5855-01-587-1456
NSN 5855-01-119-3316
NSN 5965-01-504-8199
NSN 5930-00-891-5735
NSN 7035-00-981-7216