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 6610-01-618-2158
NSN 6645-01-258-9272
NSN 6645-00-413-0461
NSN 5910-00-756-6432
NSN 6645-01-574-2818
NSN 4140-00-026-0286
NSN 6145-00-952-2872
NSN 5990-00-193-3028
NSN 5990-01-089-9694
NSN 6130-00-676-7023
NSN 5835-01-163-4215
NSN 6645-01-227-2036