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 5960-01-037-0107
NSN 6610-00-968-8193
NSN 6620-01-286-2204
NSN 5925-01-467-9910
NSN 2925-01-587-3956
NSN 6240-01-495-0597
NSN 6650-01-484-5014
NSN
NSN 7035-01-145-5059
NSN 5998-01-644-3766
NSN 6610-01-561-5604
NSN 6220-01-391-5323