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 6220-01-648-5201
NSN 5915-00-203-5890
NSN 6240-01-309-1806
NSN 5930-01-179-9086
NSN 6685-01-368-0128
NSN 5910-01-374-6984
NSN 5915-00-534-5391
NSN 5975-00-451-7208
NSN 6135-00-726-4142
NSN 5905-01-490-6907
NSN 6130-01-518-2245
NSN 5996-01-217-6644