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 6685-00-223-5816
NSN 6320-01-618-7800
NSN 5990-01-440-7135
NSN 5985-01-483-1838
NSN 5996-01-101-2987
NSN 5915-00-994-0541
NSN 6240-01-163-6606
NSN 6135-00-505-0679
NSN 6240-01-415-6004
NSN 5935-01-324-9767
NSN 5950-01-592-2420
NSN 6145-01-533-9390