The Eyeglass Loupe is designed to fit the temple of any eyeglass frames with 1/16th to 1/4 inch wide temples. Four changeable cams are furnished with the loupe and can easliy be changed with a single screw for almost any frame you may want to use. The position of the lens swings to give proper position bringing the lens to the center of the eye. The 24mm and 15mm lenses are independently adjustable depending on the power desired, providing excellent versatility. Both lenses swing out of your way when magnification is not needed. The Eye Glass Loupe can be changed for left eye use by detaching the stem from the frame with the small socket furnished. Extremely light weight for prolonged magnification without fatigue! Supplied in storage box.