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 6685-00-167-9433
NSN 6650-00-316-4889
NSN 7035-01-421-7159
NSN 5910-01-589-6019
NSN 6135-01-448-9474
NSN 4140-00-905-8331
NSN 5996-01-486-0687
NSN 5910-01-304-9768
NSN 5920-01-416-6211
NSN 5915-01-258-1785
NSN 6320-01-415-0953
NSN 6145-01-394-6392