Heat treated
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 5945-01-089-2586
NSN 6320-01-033-6624
NSN 6130-01-342-5857
NSN 5960-01-449-1310
NSN 5905-00-831-9143
NSN 6220-01-628-7054
NSN 5910-01-485-3636
NSN 6685-01-282-7647
NSN 5835-01-384-3206
NSN 5915-01-095-4069
NSN 5930-01-571-7906
NSN 6135-01-222-0703