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 6610-01-388-0563
NSN 6620-01-358-0205
NSN 5925-00-188-8678
NSN 5855-01-430-0132
NSN 6105-01-634-0322
NSN 6150-01-374-2205
NSN 6110-00-316-5450
NSN 5965-00-702-7257
NSN 5950-01-609-2810
NSN 6645-00-497-3495
NSN 6645-01-327-7362
NSN 5905-00-661-2395