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 5905-01-354-5132
NSN 2925-01-113-6904
NSN 6645-00-733-9341
NSN 6645-01-258-5558
NSN 5905-00-852-8302
NSN 5960-01-052-6997
NSN 5999-01-633-6978
NSN 5985-01-416-2803
NSN 5835-00-912-5656
NSN 5965-01-362-9609
NSN 6320-00-036-3688
NSN 6110-01-053-5500