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 5855-00-403-1031
NSN 6130-00-296-4116
NSN 6685-00-366-6997
NSN 5930-00-991-0752
NSN 5975-00-481-3681
NSN 6220-01-237-2488
NSN 5985-01-242-9467
NSN 6620-00-421-7509
NSN 5985-01-243-1027
NSN 6645-01-557-4608
NSN 6135-00-432-8779
NSN 5905-01-341-6703