Glass thickness is tapered
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 5985-01-336-4414
NSN 5915-01-548-0925
NSN 5925-01-485-3107
NSN 6685-01-423-1464
NSN 6105-00-733-6060
NSN 6220-00-918-1099
NSN 5910-01-561-9926
NSN 5855-00-149-0766
NSN 6220-01-514-7024
NSN 5835-01-558-9444
NSN 5935-01-577-1863
NSN 5985-00-361-8863