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 5945-01-594-7192
NSN 6320-01-056-1164
NSN 2925-01-228-6554
NSN 5950-00-979-6699
NSN 5930-00-322-2093
NSN 5910-01-469-7612
NSN 5990-01-188-7309
NSN 4140-00-146-1633
NSN 5950-00-228-0818
NSN 6130-00-115-1862
NSN 6135-01-648-0057
NSN 5920-01-401-5315