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 6645-01-342-1917
NSN 6135-01-432-1334
NSN 5925-01-232-0841
NSN 6150-01-239-3636
NSN 6620-00-148-9613
NSN 5998-01-167-5276
NSN 5930-00-624-9078
NSN 2925-01-583-5619
NSN 5960-00-384-2601
NSN 5999-01-151-5224
NSN 6145-01-478-1722
NSN 5910-00-266-8438