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 5996-01-633-7979
NSN 4140-01-361-8175
NSN 6645-01-138-1683
NSN 6145-01-260-3590
NSN 5915-00-843-0242
NSN 4140-00-826-9031
NSN 6135-00-993-6823
NSN 5895-00-265-6229
NSN 5905-01-333-3476
NSN 6110-01-207-1404
NSN 6685-01-429-6673
NSN 6620-01-609-9513