Donegan Optical DA7 - Optivisor - 2.75 Magnification at 6 Inch Focal Length

Optivisor - 2.75 Magnification at 6 Inch Focal Length Optivisor is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strain - leaves both hands free and allows three dimensional vision. Used by anyone whose profession or craft requires close accurate work. Can be instantly tilted downward when needed and upward when not in use. Can be worn over prescription or safety eyeglasses. Comes with dial-adjustable, conforming headband, ABS high-impact comfort band, optical glass lenses mounted in an interchangeable frame. Six lens powers available, plus an attachable auxiliary OptiLOUPE(R) lens (all sold separately, please email us) for additional magnification.