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 6220-01-160-7249
NSN 6685-01-465-8638
NSN 5905-00-904-7752
NSN 6220-00-068-1000
NSN 6220-01-531-1402
NSN 6650-01-241-7978
NSN 5835-00-887-6420
NSN 6240-01-630-3442
NSN 5915-00-278-5561
NSN 5930-00-935-4539
NSN 6610-00-034-3709
NSN 5930-00-552-1361