OptiVISOR® DA-4 Magnifying Glasses (2X Magnification at 10") Steel Bushing Usage Guide

Bushing Usage Guide

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chosen for its superior conductivity and durability

Built for precision and reliability

ABR-1 Thumbwheels - Coarse Knurl

OptiVISOR® DA-4 Magnifying Glasses (2X Magnification at 10") Steel Bushing Usage GuideThe Genuine Donegan OptiVISOR is a precision binocular headband magnifier that permits unrestricted user efficiency while reducing eye strain. It 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. DA 4 gives 2 X magnification and focuses at 10". This is the original OptiVISOR proudly made by Donegan Optical Ltd right here