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 5925-01-160-7609
NSN 5960-00-631-8754
NSN 5945-01-111-1763
NSN 5855-01-442-7929
NSN 5855-01-020-7982
NSN 4140-00-355-8644
NSN 5985-00-456-5398
NSN 5915-01-140-8465
NSN 6110-01-341-9209
NSN 6135-01-353-1036
NSN 6620-00-458-8266
NSN 5975-00-238-3697