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 5855-01-442-7929
NSN 5990-01-473-4314
NSN 6135-01-597-7685
NSN 6320-01-176-8367
NSN 6685-01-618-0582
NSN 6650-01-178-5644
NSN 6105-01-391-5390
NSN 6610-01-620-9745
NSN 6645-00-183-8812
NSN 6220-01-361-9295
NSN 6105-01-469-1198
NSN 5965-01-374-2376