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 6220-01-170-6913
NSN 6220-00-135-3272
NSN 6240-01-642-3740
NSN 6135-01-348-8264
NSN 6645-01-383-6514
NSN 5915-00-891-9925
NSN 6130-01-130-3010
NSN 6220-00-469-7173
NSN 6130-01-407-4695
NSN 6650-01-339-7571
NSN 5895-01-656-9295
NSN 6240-00-243-5796