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 6240-00-952-4501
NSN 6620-00-186-8220
NSN 5999-01-634-0576
NSN 6220-01-209-9972
NSN 5925-01-254-5905
NSN 6220-00-216-7284
NSN 5920-01-492-5535
NSN 6650-01-032-1786
NSN 6320-01-519-8767
NSN 6135-01-375-6724
NSN 5905-00-505-5360
NSN 6130-00-300-1689