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 2925-00-132-1280
NSN 5998-00-814-8394
NSN 6135-00-351-8606
NSN 5915-01-615-1675
NSN 6150-01-117-4773
NSN 5935-00-863-8583
NSN 5975-01-140-2422
NSN 5930-00-703-1450
NSN 6320-01-359-3921
NSN 6620-00-555-3992
NSN 6130-01-122-7112
NSN 6240-01-276-2019