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 6320-00-149-7570
NSN 5960-01-158-9166
NSN 6130-01-634-0603
NSN 6135-01-139-1700
NSN 5855-00-688-9954
NSN 6240-01-412-0715
NSN 5965-01-364-1232
NSN 6135-01-260-7180
NSN 7035-01-535-6945
NSN 5895-00-970-9592
NSN 5950-01-445-5586
NSN 5895-00-929-0883