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 2925-01-429-2235
NSN 4140-00-277-6285
NSN 6685-01-426-8929
NSN 5998-00-960-8513
NSN 5999-00-719-9664
NSN 6610-01-476-9945
NSN 6105-01-462-0140
NSN 6320-00-857-4073
NSN 5920-01-115-1739
NSN 5950-00-343-9683
NSN 5965-01-195-2168
NSN 6135-01-581-8163