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 5975-00-189-0857
NSN 6650-01-391-4461
NSN 4140-01-074-4351
NSN 6145-00-009-0619
NSN 5960-01-649-1341
NSN 5996-01-553-1118
NSN 6110-00-083-6776
NSN 5920-01-595-7650
NSN 5950-01-169-5821
NSN 5960-01-458-6484
NSN 6220-01-444-3972
NSN 6320-01-144-3810