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 6620-01-578-7561
NSN 6650-01-364-1313
NSN 6150-00-793-7831
NSN 5935-01-313-1428
NSN 5925-01-634-0664
NSN 5910-00-148-4886
NSN 6650-01-215-4487
NSN 5965-00-451-0033
NSN 6320-01-111-0960
NSN 6650-01-209-2409
NSN 6220-00-376-8103
NSN 5905-00-913-7937