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 4140-00-252-7734
NSN 5999-01-276-8185
NSN 5855-00-832-9341
NSN 6620-01-435-7083
NSN 5998-00-295-2456
NSN 6650-00-641-6139
NSN 6620-01-544-4857
NSN 5990-00-105-7831
NSN 6685-01-507-3158
NSN 5996-01-323-1500
NSN 5930-01-437-1011
NSN 2925-01-320-6512