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 6220-00-141-3738
NSN 6650-01-654-6257
NSN 6105-01-401-5361
NSN 5930-00-498-7600
NSN 5999-00-118-3702
NSN 5895-01-498-8174
NSN 5925-00-952-8641
NSN 6620-01-187-7267
NSN 5915-00-977-1691
NSN 5985-00-623-0328
NSN 6650-00-287-5868
NSN 5996-01-513-9656