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 5905-01-047-6214
NSN 5945-01-477-8488
NSN 6645-01-626-9782
NSN 5945-01-422-8162
NSN 5999-01-030-3167
NSN 6135-01-026-9960
NSN 6610-01-620-7711
NSN 5920-00-823-0969
NSN 6620-01-278-6953
NSN 5998-01-502-7534
NSN 5905-01-092-6058
NSN 4140-01-286-3682