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 6220-01-392-1429
NSN 6240-01-394-5697
NSN 5999-01-507-1936
NSN 5950-01-555-6908
NSN 6620-01-281-3542
NSN 5835-00-930-8500
NSN 5910-01-230-2881
NSN 5925-01-421-4473
NSN 5960-01-085-1918
NSN 6685-01-468-5781
NSN 6145-01-508-4095
NSN 5855-01-374-4118