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 6645-00-140-5173
NSN 4140-01-329-2307
NSN 5905-01-379-3222
NSN 6685-00-935-4250
NSN 5935-01-518-8698
NSN 5996-01-422-8103
NSN 6620-00-010-1415
NSN 6610-00-479-0681
NSN 7035-01-003-9142
NSN 5960-01-281-5437
NSN 6130-00-443-9754
NSN 5925-00-708-8769