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 6645-01-447-3143
NSN 6130-01-240-3630
NSN 5930-01-280-5465
NSN 5999-01-569-9950
NSN 5935-00-564-5434
NSN 6610-01-555-0842
NSN 5998-00-203-1232
NSN 5945-00-520-6043
NSN 6650-01-474-0249
NSN 6135-00-120-1027
NSN 6620-00-905-6590
NSN 5990-01-123-4226