Donegan model number V-350-2 Jewelers Eye Loupe 5X. Glass lens in a black plastic frame. Focal length is 2 inches. 5X magnification. Fits into user’s eye socket. Manufactured by Donegan Optical in the U.S.A.
Jeweler’s Eye Loupe, Donegan model number V-360. Double glass lenses snap together in a black plastic frame. Can be used as a single 1-1/2″ focal length (4X) or double 3/4″ focal length (12X). Fits into user’s eye socket.