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 6220-01-631-3488
NSN 5925-01-139-3866
NSN 5996-01-454-6938
NSN 6145-01-371-6250
NSN 5930-01-352-5428
NSN 5920-00-107-0834
NSN 6145-00-978-8056
NSN 5960-01-166-4021
NSN 6320-00-593-0379
NSN 5996-01-569-6049
NSN 6130-00-245-3251
NSN 5999-00-706-6636