Fowler 52-660-737-0 3-D SIGHTER 2-3/4X

Fowler High Precision Binocular magnifier enhances the size and resolution of an object or image for a variety of applications including jewelry-making, watch-making, electronic inspection, book-reading, and various hobbies Prismatic lenses provide a clear three-dimensional (3D) image Adjustable headband has no moving parts to wear out and provides for hands-free use Can be worn with glasses and bifocals A dioptric number and a magnification number are not the same thing. Diopter strength represents a specific magnification power (X). For example, a 5-diopter provides 2.5X magnification (at a distance of 8")