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 5990-01-419-0661
NSN 6220-00-738-0815
NSN 6130-00-962-8445
NSN 5999-01-188-4374
NSN 5975-00-431-8708
NSN 4140-00-981-8580
NSN 6685-00-245-9521
NSN 5985-01-298-6082
NSN 6240-01-055-9696
NSN 5965-00-479-9567
NSN 6145-01-417-2988
NSN 5998-01-127-6822