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 4140-01-320-1179
NSN 6145-01-600-1688
NSN 6220-00-562-2179
NSN 6130-01-469-8029
NSN 5996-01-562-7347
NSN 6645-01-504-3394
NSN 5985-00-766-8499
NSN 6620-00-351-9949
NSN 6610-01-435-5425
NSN 5930-00-462-4743
NSN 5960-00-188-8648
NSN 5965-01-529-4417