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 6650-00-929-3946
NSN 7035-00-206-6123
NSN 6135-01-274-3546
NSN 5915-00-963-6049
NSN 5905-01-220-7215
NSN 6110-00-136-9590
NSN 5920-00-821-0078
NSN 5975-00-374-5245
NSN 4140-01-224-8715
NSN 6620-00-179-9079
NSN 4140-01-448-9725
NSN 6685-00-078-3576