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 6240-01-401-5340
NSN 6645-00-309-0447
NSN 6610-01-587-1803
NSN 5999-01-163-3432
NSN 7035-01-429-0431
NSN 2925-01-461-6372
NSN 6620-01-076-1340
NSN 5835-01-435-4139
NSN 5905-00-539-0824
NSN 5990-01-059-0947
NSN 6685-00-598-1944
NSN 5925-01-650-5714