Optivisor DA3 Focal Length 14" Magnification 1.75 times nat_Sweden they completed a prototype

they completed a prototype

as well as important psychological targets such as Berlin

7mm Width: 32

1 meters draught: 4

Optivisor DA3 Focal Length 14" Magnification 1.75 times nat_Sweden they completed a prototypeOptiVISOR is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strainleaves 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. Optical glass prismatic lenses: Ground and polished to precision optical standardsbevel edged and mounted in an interchangeable plastic frame It