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 4140-00-861-5399
NSN 6145-01-462-4452
NSN 6240-01-233-2334
NSN 6685-01-123-1873
NSN 5985-01-412-9168
NSN 6105-01-437-5646
NSN 6685-01-036-3690
NSN 5915-01-601-7787
NSN 5920-00-187-0260
NSN 5925-01-620-0704
NSN 5910-01-182-6607
NSN 5990-01-461-8969