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 5935-01-634-0668
NSN 6685-00-771-8569
NSN 6110-01-112-7147
NSN 5975-00-623-6460
NSN 5990-01-581-5103
NSN 6145-01-549-6136
NSN 5905-00-053-4131
NSN 5996-01-442-7481
NSN 6135-01-247-5660
NSN 6320-01-530-4870
NSN 6645-00-242-0480
NSN 6105-00-983-5925