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 6150-00-819-1112
NSN 6220-00-079-2943
NSN 6685-01-391-9078
NSN 5905-01-085-0587
NSN 5950-00-116-6520
NSN 5985-00-261-3359
NSN 2925-01-069-5324
NSN 6240-01-264-1277
NSN 5990-01-157-0441
NSN 5998-01-388-3556
NSN 6150-01-533-6364
NSN 5935-01-068-3637