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 4140-01-167-6571
NSN 6685-00-180-0349
NSN 5930-00-132-6901
NSN 5960-00-077-1828
NSN 5990-01-254-2936
NSN 5835-00-833-7080
NSN 6610-01-172-4041
NSN 6110-01-267-5122
NSN 5895-00-665-2407
NSN 5985-01-356-4435
NSN 5965-00-592-0812
NSN 5920-00-902-6827