Donegan Optical OptiVISOR LX Binocular Lensplate #4 Magnifies 2X at 10-inch, Other, Multicoloured, 5.08 x 20.32 x 29.59 cm

Donegan OptiVISOR LX Binocular Magnifier-Lensplate #4 Magnifies 2X At 10" Focal Length

Donegan LP1 OptiLOUPE Magnifier for OptiVISOR, Adds 2.5X Magnification

Quasar Led Lighting System for Optivisors | ELP-558.00