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 2925-01-655-4455
NSN 5985-01-358-0538
NSN 6220-01-441-2249
NSN 5895-00-856-3081
NSN 6240-01-045-2095
NSN 6110-01-386-1536
NSN 5855-01-236-9645
NSN 5915-01-514-8689
NSN 5985-00-130-2604
NSN 5915-00-350-8346
NSN 6650-01-250-8211
NSN 6240-00-183-0750