Bausch & Lomb Single Lens Watchmaker's Eye Loupe 4X Loop This Bausch & Lomb Single Lens Eye Loupe is made of high quality optical glass, which provides a clear distortion-free image. The hands free style allows the Loupe to rest comfortably in the eye socket. This Eye Loupe is the standard style of Loupe used in the watchmaking industry and is excellent for any application where magnification is needed while keeping both hands free to work. Includes padded carry pouch. Overall size: 1-1/8" wide x 1-1/2" high, Lens diameter: 1", Lens magnification: 4X Lens material: Optical Glass Housing material: Plastic- Country of origin: USA