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 5985-01-131-4488
NSN 6320-00-336-9123
NSN 6685-01-135-1751
NSN 5945-01-452-7905
NSN 5998-00-087-0089
NSN 7035-00-585-2113
NSN 6150-01-406-5400
NSN 6685-01-525-7586
NSN 5835-01-592-2350
NSN 4140-01-398-3985
NSN 6110-01-128-5018
NSN 4140-00-518-2744