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 6240-00-180-4602
NSN 5905-00-212-4396
NSN 2925-00-542-8285
NSN 5990-01-504-9265
NSN 5930-01-364-9378
NSN 5996-01-156-9316
NSN 5915-01-121-9445
NSN 5975-01-524-0637
NSN 6135-01-051-7836
NSN 6130-01-407-4695
NSN 5930-00-006-5737
NSN 6130-00-583-7870