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 5905-01-353-0284
NSN 5905-00-999-2273
NSN 6220-01-556-8043
NSN 6135-01-113-1507
NSN 6610-01-042-3954
NSN 7035-01-298-5154
NSN 6240-01-401-5340
NSN 6145-01-201-8821
NSN 7035-01-189-7367
NSN 6320-01-449-1014
NSN 6240-01-647-3790
NSN 6110-00-451-5223