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 6620-00-912-0255
NSN 5920-00-030-5712
NSN 5990-00-631-1617
NSN 5835-01-495-0595
NSN 5855-01-091-9966
NSN 5925-01-467-9910
NSN 6320-00-483-0451
NSN 6105-00-879-7157
NSN 5925-01-442-3792
NSN 6620-01-191-9514
NSN 6240-01-469-2957
NSN 5920-00-519-7664