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 5910-01-329-1725
NSN 5998-01-392-2041
NSN 6220-01-376-9287
NSN 5925-01-115-4166
NSN 5950-00-529-0599
NSN 7035-01-564-1821
NSN 5998-00-401-4042
NSN 5935-01-243-9213
NSN 6145-01-463-7128
NSN 5990-01-309-5840
NSN 5920-01-476-2883
NSN 5998-01-564-9523