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 2925-01-394-9658
NSN 5905-00-904-1103
NSN 6220-01-395-8482
NSN 6135-00-455-2425
NSN 6110-01-533-3824
NSN 5950-01-193-1467
NSN 6135-00-880-1026
NSN 6645-00-080-1087
NSN 6320-00-994-0179
NSN 5990-01-238-1975
NSN 5855-01-207-8691
NSN 5950-01-383-5947