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 2925-01-368-5773
NSN 6650-01-513-2644
NSN 6650-01-571-9386
NSN 4140-01-421-0816
NSN 6135-00-078-9931
NSN 2925-01-265-2853
NSN 5895-00-827-0240
NSN 5915-01-258-4699
NSN 6685-01-168-7712
NSN 6130-01-221-7682
NSN 5910-01-359-6314
NSN 6320-00-925-0558