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 5965-01-197-6924
NSN 5855-01-062-5655
NSN 6320-01-489-6044
NSN 6645-01-629-9657
NSN 5990-00-518-0684
NSN 7035-00-523-7492
NSN 5895-01-183-8114
NSN 5930-01-456-1857
NSN 5905-01-634-0595
NSN 6685-01-548-0867
NSN 6645-01-162-8023
NSN 6110-01-005-1595