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 5925-01-325-5238
NSN 5910-00-388-6737
NSN 2925-00-113-6146
NSN 5975-01-445-6169
NSN 5990-00-170-4239
NSN 5835-01-525-3220
NSN 5920-00-245-6434
NSN 5996-01-026-8382
NSN 5996-01-086-1317
NSN 6145-01-430-3839
NSN 5835-00-433-0170
NSN 5996-00-581-2363