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 5910-01-308-5043
NSN 5965-01-093-0642
NSN 6130-00-864-5210
NSN 5996-00-683-5176
NSN 5965-00-932-4591
NSN 6135-00-542-6216
NSN 6150-00-296-2361
NSN 6110-00-459-4217
NSN 2925-01-206-7948
NSN 5990-01-054-3332
NSN 6145-01-461-1357
NSN 6240-01-449-1387