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 5895-01-350-7273
NSN 4140-00-172-1804
NSN 5945-01-414-8278
NSN 6320-01-029-2196
NSN 5975-01-361-9141
NSN 5910-00-657-4955
NSN 5915-01-052-5394
NSN 5998-00-229-9166
NSN 5990-01-100-1840
NSN 5990-01-439-4643
NSN 5975-00-139-3729
NSN 5975-01-021-8678