Here's a very handy way to get a clear, sharp, hands-free look at your work. A comfortable, easily adjustable headband holds the flip-up binocular lens assembly at eye level, with plenty of room for glasses beneath. The focus distance of our 1.75X Magni-Focuser is about 12"-14", just right for scroll sawing, carving and other detailed woodworking jobs. New bifocal Magni-Focusers feature 1.75X upper lenses, and 2.25X lower lenses with roughly 8" focal length. They're great for close-focus jobs like sharpening tools and saws.