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 5985-01-555-9165
NSN 6145-01-575-8783
NSN 6620-01-311-3516
NSN 5910-01-172-3979
NSN 5925-01-326-7226
NSN 5990-01-178-4033
NSN 5855-01-308-0955
NSN 6610-01-076-4800
NSN 5996-00-618-5920
NSN 5998-01-634-0604
NSN 5975-00-193-3083
NSN 5855-01-312-5160