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 6145-01-386-3084
NSN 6620-01-119-2346
NSN 6685-01-424-0497
NSN 5855-01-474-6820
NSN 5855-01-163-8152
NSN 4140-00-316-5383
NSN 6610-00-978-5133
NSN 4140-00-547-8918
NSN 6150-00-003-7431
NSN 5895-01-209-9244
NSN 5915-00-900-3369
NSN 6685-00-055-7656