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 6150-01-105-6627
NSN 6240-00-212-4305
NSN 6220-00-764-9150
NSN 4140-01-657-5681
NSN 5895-00-241-9375
NSN 5965-01-339-0059
NSN 5965-01-277-4161
NSN 5990-00-518-0684
NSN 6650-01-446-6646
NSN 6135-01-441-7922
NSN 5905-01-429-6066
NSN 6685-00-695-7129