Donegan DA-5 OptiVisor Headband Magnifier, 2.5x Magnification, 8" Focal Length
Binocular headband magnifier provides hands-free magnification and viewing for a variety of applications such as jewelry-making, watch-making, needlework, artwork, electronic inspection, book-reading, print inspection, and stamp-collectingAvailable in multiple dioptric strengths (indicated by the model number) that provide a specific magnification power (X), depending on the distance from the objectA dioptric number and a magnification number a ...