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 6150-00-050-6832
NSN 5835-00-083-6557
NSN 2925-00-242-7688
NSN 6145-01-070-9801
NSN 5835-01-290-5925
NSN 6145-01-291-6894
NSN 6610-00-110-9455
NSN 6130-01-426-8841
NSN 5965-00-035-4556
NSN 5990-00-557-3672
NSN 6220-01-412-0687
NSN 2925-01-648-6859