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 5996-01-353-1597
NSN 2925-01-624-5647
NSN 5930-01-605-2119
NSN 5925-01-044-5508
NSN 6320-01-072-2073
NSN 5855-01-013-6864
NSN 5915-01-308-1537
NSN 5950-01-499-8251
NSN 6645-01-202-7986
NSN 6610-00-273-9019
NSN 5915-00-004-6000
NSN 6620-01-537-1813