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 6320-00-164-4087
NSN 6620-01-524-9112
NSN 6240-01-050-5124
NSN 5950-01-396-8124
NSN 5855-01-658-1044
NSN 5925-00-144-0482
NSN 6610-01-036-8225
NSN 5950-01-291-7713
NSN 5930-01-384-1330
NSN 6145-01-124-6688
NSN 6620-00-588-6982
NSN 5975-00-937-0415