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 2925-00-951-0150
NSN 6220-01-003-9126
NSN 5990-00-636-4218
NSN 5998-01-370-3464
NSN 5996-00-871-9093
NSN 6650-01-407-4653
NSN 5998-00-728-8636
NSN 5996-01-015-6460
NSN 4140-01-495-0865
NSN 5975-01-399-3079
NSN 6220-00-878-7301
NSN 5950-01-333-1313