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 6620-00-516-3204
NSN 6150-01-433-2490
NSN 5905-00-000-0136
NSN 6110-00-927-1794
NSN 6610-01-182-9481
NSN 6220-01-008-7401
NSN 5835-00-870-7034
NSN 5965-01-133-3985
NSN 6320-00-564-2772
NSN 6685-01-579-7559
NSN 6240-00-482-1142
NSN 6645-01-374-6343