Amazon.com : 20x Stereo Microscope with LED Illumination : Bedandbath : Electronics
Trinocular Stereo Zoom Microscope w/56 LED Compact Ring Light and HDMI – AmScope
Phase contrast
A pair of Prior, England, x20 Zoom, binocular microscopes, No. 34296 and No. 39177. (2) Provenance: From the Science Lab of Ecclesbourne School in Duffield.