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 6220-01-391-7561
NSN 5910-01-620-9478
NSN 5965-01-424-1096
NSN 5835-01-057-5827
NSN 5990-00-170-4239
NSN 5945-01-008-5313
NSN 5996-00-456-0895
NSN 5996-01-502-5663
NSN 5999-01-147-8977
NSN 5985-01-234-5389
NSN 5945-00-411-3690
NSN 5996-00-915-3164