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 5975-01-641-3531
NSN 6320-01-054-3046
NSN 2925-01-398-6751
NSN 5985-01-073-8437
NSN 5990-01-544-0364
NSN 6320-01-382-9676
NSN 5950-00-853-2755
NSN 6220-00-111-0921
NSN 6105-00-435-8829
NSN 6620-01-107-2965
NSN 6220-01-209-4745
NSN 6110-00-402-6376