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 6650-01-071-7985
NSN 4140-01-394-4166
NSN 5835-01-174-7700
NSN 4140-01-203-8713
NSN 5895-01-579-3592
NSN 5975-01-249-5920
NSN 5905-01-298-3459
NSN 5930-00-450-6773
NSN 7035-00-585-2113
NSN 5999-01-315-3126
NSN 7035-00-215-3272
NSN 5960-01-617-6345