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 2925-01-368-5773
NSN 4140-01-160-7391
NSN 5835-00-228-9082
NSN 5996-01-293-2252
NSN 6135-01-056-4609
NSN 6620-00-525-9294
NSN 5905-01-410-7780
NSN 4140-01-515-1121
NSN 5835-01-645-2892
NSN 5945-01-424-9346
NSN 5975-00-916-5940
NSN 5925-01-337-0286