WF20X-Lentille grand angle pour microscope, accessoire pour les yeux, SIM, Seattle, stéréo, diamètre d'installation de 23.2mm, 2 pièces par unité | AliExpress
Microscope Eyepiece Wf10x Wf15x Wf20x With Scale Ruler 30mm Interface Glass Lens For Stereo Trinocular Binocular Microscopio | Fruugo AE
2 pcs WF20X /12mm High Eye-point Eyepiece Lens For Compound Microscope 30mm | eBay
UNITRON 135-10-20 WF20x/12mm Focusing Eyepiece, Single - New York Microscope Company
UNITRON 131-10-20 WF20x/12.5mm Focusing Eyepiece - New York Microscope Company