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 6105-01-059-5507
NSN 6135-01-180-9611
NSN 5990-00-373-9787
NSN 6145-01-052-5203
NSN 5965-01-028-6206
NSN 5915-01-406-7166
NSN 6610-00-142-9678
NSN 5950-01-159-9504
NSN 5835-01-654-4570
NSN 5960-01-258-6708
NSN 5990-01-416-6009
NSN 6220-01-393-2335