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 5990-00-145-1187
NSN 5855-01-562-6560
NSN 5985-00-528-1902
NSN 6650-00-948-3647
NSN 5915-01-651-4471
NSN 6150-01-376-0032
NSN 6645-01-088-5244
NSN 5950-01-004-1680
NSN 5950-01-215-1500
NSN 6320-01-082-2970
NSN 5935-01-182-9634
NSN 5895-00-245-8444