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 5990-00-155-2306
NSN 5855-00-688-9954
NSN 6685-01-634-0611
NSN 6150-01-410-8880
NSN 6645-00-505-6026
NSN 6220-01-090-0126
NSN 5999-01-433-2778
NSN 6130-00-104-5573
NSN 5920-01-442-9746
NSN 6145-01-365-7801
NSN 4140-01-029-4129
NSN 6610-00-237-9459