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 6220-00-419-0635
NSN 6620-01-381-6225
NSN 5835-01-580-0446
NSN 5965-01-447-0840
NSN 5950-01-401-5321
NSN 6685-00-258-2257
NSN 5915-01-463-2283
NSN 6320-01-384-3850
NSN 5910-00-004-6389
NSN 6320-00-089-9426
NSN 5996-00-407-4661
NSN 6150-01-413-7809