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 5905-00-910-4002
NSN 5990-00-705-4350
NSN 5930-00-869-2859
NSN 6130-01-484-0869
NSN 5855-01-339-1718
NSN 5960-01-588-1441
NSN 6150-00-284-2976
NSN 6135-00-835-2330
NSN 5996-01-250-2814
NSN 5975-00-304-5019
NSN 4140-01-426-8428
NSN 5985-01-552-8181