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 5920-01-628-7865
NSN 5920-00-274-6929
NSN 5905-01-541-4389
NSN 5895-00-925-5810
NSN 5915-00-917-1725
NSN 5975-01-344-9760
NSN 5990-01-642-5748
NSN 6320-00-036-3688
NSN 5945-00-883-4426
NSN 6130-00-984-6252
NSN 5920-01-543-6348
NSN 6620-01-483-1138