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 6685-01-227-3137
NSN 5925-00-233-3608
NSN 5920-01-573-9782
NSN 5990-01-215-5997
NSN 6105-00-219-2925
NSN 4140-00-005-1783
NSN 6220-01-519-9305
NSN 6685-01-200-7617
NSN 5985-00-291-1140
NSN 6320-01-547-2743
NSN 6320-00-004-9158
NSN 4140-01-177-1445