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 6645-01-392-2022
NSN 5990-00-932-3070
NSN 5920-01-401-5315
NSN 5855-01-119-5869
NSN 5960-00-372-4876
NSN 6145-01-239-2674
NSN 5835-00-005-7182
NSN 5999-01-369-3145
NSN 6650-01-023-7002
NSN 6650-01-481-6647
NSN 5905-01-527-6833
NSN 5960-01-293-6624