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 6240-01-633-9357
NSN 5998-00-958-7399
NSN 6145-01-523-9705
NSN 6620-01-417-7040
NSN 5905-01-654-3446
NSN 6150-01-600-3596
NSN 6645-00-226-2270
NSN 5925-01-148-2301
NSN 6650-01-170-4397
NSN 5998-00-529-2551
NSN 5985-01-458-3384
NSN 5915-01-067-9470