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 5905-01-047-5173
NSN 5950-01-139-6830
NSN 6135-01-658-7467
NSN 5925-01-384-3234
NSN 5999-01-571-7626
NSN 6620-00-753-8929
NSN 6610-01-157-0426
NSN 5905-01-109-8510
NSN 2925-01-471-4912
NSN 6620-00-469-2502
NSN 5835-00-170-5238
NSN 5915-01-376-3188