Donegan OptiVISOR AL Headband Magnification Set-

Donegan OptiVISOR AL Headband Magnification Set: Lightweight lenses and tough materials are designed to last Optical prismatic lenses from precision ground and highly polished molds Adjustable side pivots allow the visor to tilt at your fingertips Dial adjustment headband conforms to comfortably fit most head sizes OptiVISOR magnifier includes a genuine leather padded comfort band with orthopedic felt for extra comfort Provides magnification for office, home, workshop and crafts Package contains optical visor with one 3 diopter (magnifies 1.75X at 14"), one 4 diopter (magnifies 2X at 10"), one 5 diopter (magnifies 2.5X at 8") and one 7 diopter (magnifies 2.75X at 6")