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 4140-01-196-5232
NSN 5915-00-276-8332
NSN 6320-00-036-3688
NSN 5935-01-601-6031
NSN 6650-01-614-3302
NSN 5999-01-356-2544
NSN 6685-01-300-2630
NSN 6135-01-528-6896
NSN 6135-00-010-5275
NSN 5999-00-911-9140
NSN 6130-01-122-3503
NSN 5855-00-294-7532