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 5905-01-367-1693
NSN 6320-00-098-2858
NSN 5855-01-430-3246
NSN 5905-00-137-1490
NSN 6220-01-049-5375
NSN 6135-01-362-4256
NSN 6685-01-360-0374
NSN 6610-01-240-4753
NSN 5925-00-529-0441
NSN 6645-01-644-3850
NSN 5910-00-206-3224
NSN 4140-01-330-4137