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 6240-01-629-9175
NSN 6220-00-151-5383
NSN 5930-00-846-3209
NSN 6240-00-442-2118
NSN 6220-01-592-3183
NSN 5975-01-122-6086
NSN 5950-00-145-9781
NSN 5915-00-199-7531
NSN 4140-00-630-2153
NSN 6150-00-596-9882
NSN 5999-01-222-5432
NSN 5965-00-840-6542