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 6320-01-052-2118
NSN 5985-01-298-0729
NSN 6135-01-369-0939
NSN 5975-01-022-9713
NSN 4140-01-085-4965
NSN 6135-01-196-7399
NSN 6685-01-382-5851
NSN 5905-01-391-4983
NSN 6650-00-647-1085
NSN 2925-00-863-8578
NSN 5975-01-521-9840
NSN 6220-01-528-1075