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 4140-00-882-2233
NSN 6620-01-557-6512
NSN 6620-01-276-9825
NSN 6240-01-644-1531
NSN 6135-00-519-1325
NSN 5920-00-216-8665
NSN 6145-01-384-3490
NSN 6610-00-186-9180
NSN 2925-01-123-5856
NSN 5990-00-029-9064
NSN 5855-00-149-0766
NSN 6135-01-036-3495