Magnifier -Donegan Optical Opti Visor - 2X *MADE IN THE USA* – HobbyTools.com
Donegan OptiVISOR DA-5 2.5 X Magnification at 8"
Optivisor w/Light Kit 2.5x at 8in | Micro-Tools
Optivisor Headband Magnifiers | TALAS
Donegan OptiLOUPE® LP-1 OptiVISOR® Accessory Lens, adds 2.5x magnification and has a glass lens for Donegan Optivisors and similar headband magnifiers.