OptiVISOR - Donegan Optical Company, Inc.
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 worn over prescription or safety eyeglasses. OptiVISOR Specs Item No. Focal Length Magnification DA-2 20″ 1.5 times DA-3 14″ 1.75 times DA-4 10″ 2 times DA-5 8″ 2.5 times DA-7 6″ 2.75 times DA-10 4″ 3.5 times
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