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 6620-01-415-1622
NSN 5960-00-331-0173
NSN 5925-01-014-6602
NSN 5965-00-144-2543
NSN 5930-01-400-6126
NSN 5990-00-079-2903
NSN 5998-01-322-8579
NSN 5999-00-251-5037
NSN 6685-01-203-5023
NSN 5975-00-932-5591
NSN 5855-01-417-3250
NSN 5925-00-529-0441