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 6685-01-026-0111
NSN 5855-01-191-3404
NSN 2925-01-180-7793
NSN 5855-01-545-3659
NSN 5990-00-497-9234
NSN 5996-01-504-2065
NSN 6105-01-632-3606
NSN 6610-01-368-8344
NSN 6645-00-283-6794
NSN 5930-01-406-5243
NSN 6620-01-401-5356
NSN 5835-01-487-3042