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 2925-01-421-0068
NSN 5960-01-632-6576
NSN 6220-00-528-7752
NSN 5910-00-902-4190
NSN 5998-01-645-6196
NSN 5920-01-607-0771
NSN 6135-01-297-5565
NSN 4140-00-008-1875
NSN 6645-01-203-4916
NSN 5950-00-804-6064
NSN 5855-01-020-7982
NSN 6145-01-470-3933