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 6620-01-438-0415
NSN 6685-01-323-2136
NSN 5960-01-025-2526
NSN 5998-01-119-8507
NSN 5930-01-319-6213
NSN 6130-01-297-8129
NSN 6610-01-444-1490
NSN 5999-01-142-9559
NSN 6240-00-143-6558
NSN 5975-00-060-4050
NSN 5950-01-653-8292
NSN 6150-01-500-9731