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 6685-01-556-3449
NSN 4140-00-836-6319
NSN 5975-01-515-7229
NSN 6130-01-529-7629
NSN 5985-01-197-6999
NSN 5965-00-316-2768
NSN 5985-00-723-9506
NSN 5945-00-203-5575
NSN 6650-00-876-0152
NSN 5985-01-384-3847
NSN 5965-00-233-3851
NSN 6620-01-240-3361