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 6110-00-459-4217
NSN 6105-01-204-7176
NSN 5855-00-482-9876
NSN 5915-01-415-2477
NSN 6320-01-497-3116
NSN 5915-01-361-0452
NSN 5998-01-142-2088
NSN 6240-01-023-5536
NSN 6220-00-599-4100
NSN 6240-00-059-4637
NSN 5920-01-260-3945
NSN 5985-01-154-6373