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 6620-01-322-0018
NSN 6130-01-487-7733
NSN 7035-01-589-7132
NSN 5965-01-574-3508
NSN 5990-01-202-7003
NSN 5996-00-100-1238
NSN 6145-00-753-2264
NSN 6645-01-227-2036
NSN 5920-00-185-3824
NSN 6150-01-456-8360
NSN 5910-00-153-1962
NSN 6320-00-994-0179