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 5905-01-555-1420
NSN 6645-01-504-3394
NSN 5965-00-826-1841
NSN 5920-00-646-7885
NSN 6685-00-916-5583
NSN 6650-00-153-3155
NSN 5990-00-254-4825
NSN 6620-00-253-6329
NSN 5895-00-538-7929
NSN 6240-01-434-1981
NSN 6620-01-408-4464
NSN 6105-00-434-2223