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 5998-01-508-3151
NSN 5996-01-400-0917
NSN 6220-01-590-7272
NSN 5905-00-277-7439
NSN 5998-00-291-6818
NSN 6610-01-487-6843
NSN 7035-00-763-6180
NSN 6130-01-205-6294
NSN 6130-01-338-5962
NSN 4140-01-140-4552
NSN 2925-01-079-6229
NSN 5920-01-393-5460