Electron Microscopy Sciences Magnabrite 90 mm Diameter

Electron Microscopy Sciences Made from solid grounded acrylic (not molded) and polished like a glass lens. Crystal clear and pre-focused. There are no bulbs or batteries needed. The 4x magnification light-gathering magnifiers intensifying available light nearly four times and focusing it on the subject area. An "infinite eyepoint" eliminates the need to keep the eye close to the magnifier so the object can be viewed from any distance, at any angle. It reduces eye strain and allows several people to view the same object at once. - EMS