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 2925-01-149-2865
NSN 5895-01-395-2070
NSN 6320-01-585-8468
NSN 6105-01-510-3915
NSN 6110-01-449-0150
NSN 6685-00-868-8485
NSN 6135-01-142-6456
NSN 6145-00-787-7313
NSN 6645-01-147-5579
NSN 7035-00-631-3782
NSN 5985-00-268-1396
NSN 5998-01-387-0341