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 4140-01-207-7218
NSN 6620-01-152-0936
NSN 6150-01-618-1923
NSN 6135-01-108-6057
NSN 6685-01-386-5129
NSN 6685-01-139-4944
NSN 5930-00-852-9543
NSN 5915-01-303-5453
NSN 5975-01-492-9860
NSN 5996-01-530-8504
NSN 6135-01-277-7907
NSN 6685-01-149-8629