Donegan Optical - Headband Magnifier OptiVISOR® [1/EA] (245855_EA)

Focal length is 4 inches.. Magnification is 3½ times.. Ground and polished to precision optical standards. Bevel edged and mounted in interchangeable plastic frame. Adjustable pivots allow the visor to be tilted out of the way when not needed and at your fingertips when you need magnification.. Conforms to fit all head sizes. Fabricated from a special blend lightweight material. Comfortable when worn for long periods of time and can be worn over prescription or safety eyeglasses. Leather band is padded with orthopedic felt for comfort..