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 4140-00-262-9921
NSN 5895-01-304-9920
NSN 5996-01-060-9882
NSN 5965-00-482-0913
NSN 5920-01-618-3375
NSN 6685-01-097-4048
NSN 6610-01-330-7839
NSN 5925-01-413-7673
NSN 5935-01-158-9165
NSN 5935-00-824-4007
NSN 2925-00-051-1467
NSN 5950-01-003-3281