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 6320-01-185-3857
NSN 6620-00-113-9145
NSN 5996-01-604-8526
NSN 5895-00-740-7461
NSN 5930-01-338-9499
NSN 6130-00-199-9545
NSN 6685-01-510-1537
NSN 6645-00-810-7229
NSN 6620-00-500-0041
NSN 5895-00-283-5581
NSN 5935-00-008-2863
NSN 5910-01-531-5509