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 6135-01-571-7488
NSN 4140-01-573-8264
NSN 5985-00-289-9862
NSN 6685-01-634-0611
NSN 6610-01-060-5011
NSN 5910-01-647-3537
NSN 5925-01-476-5666
NSN 5930-01-267-5986
NSN 5915-01-269-2587
NSN 6130-00-010-1042
NSN 5855-01-297-7847
NSN 6645-01-390-6520