since 1976
Focal Length: 4”/101.6 mmMagnification: 3.5 timesOptiVISOR is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strain—leaves both hands free and allows three...
Focal Length: 6”/152.4mmMagnification: 2.75 timesOptiVISOR is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strain—leaves both hands free and allows three...
Focal Length: 20”/508mmMagnification: 1.5 timesOptiVISOR is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strain—leaves both hands free and allows three...
Focal Length: 14”/355.6mmMagnification: 1.75 timesOptiVISOR is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strain—leaves both hands free and allows three...
Focal Length: 10”/254mmMagnification: 2 timesOptiVISOR is a precision binocular headband magnifier which permits unrestricted user efficiency while reducing eye strain—leaves both hands free and allows three...