Donegan LP-4 OptiVisor® Glass Lens Plate, 2X Magnification at 10" Focal Length.
Donegan AL-17 OptiVisor®Glass Lens Plate USA NOS Hobbyist 2-3/4X @ 6" focal Lgth
Donegan LP-5 Replacement Lens Plate for OptiVISOR
Donegan LP-7 Replacement Lens Plate for OptiVISOR, 2.75x at 6" Magnification
Donegan Optical. LP1 Optiloupe Magnifier for Optivisor, Adds 2.5X Magnification
Donegan OptiVISOR LX-5 Headband Magnifier 2.5x Hands-Free Adjustable Black
Donegan LX-5 OptiVISOR Headband Magnifier, 2.25X Magnification Optical-Grade Acr
