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 2925-01-408-2088
NSN 6110-01-062-7269
NSN 5920-01-632-1672
NSN 6645-01-383-6514
NSN 5905-00-470-1998
NSN 5905-00-102-4243
NSN 5925-01-494-3272
NSN 6620-00-957-1352
NSN 4140-01-210-8049
NSN 6135-01-118-8235
NSN 6145-01-360-2789
NSN 5999-01-502-7528