Marked megacycles
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 5998-01-161-0130
NSN 5925-01-441-9316
NSN 5930-01-627-8293
NSN 6645-01-536-6111
NSN 5998-00-223-9036
NSN 6620-00-189-0967
NSN 5998-01-507-2715
NSN 6145-00-038-3369
NSN 5905-01-400-0963
NSN 5915-01-627-2299
NSN 6685-01-449-2450
NSN 2925-01-189-4272