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 5975-00-975-1548
NSN 5945-00-185-6609
NSN 7035-01-151-0265
NSN 5930-01-600-3458
NSN 5965-00-275-0491
NSN 6645-01-398-8968
NSN 5905-00-599-4661
NSN 5990-00-931-6304
NSN 6110-01-451-4326
NSN 6220-01-129-2354
NSN 7035-01-162-5230
NSN 6150-01-512-1952