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foldscope, a lightweight optical microscope that costs less than a dollar
Foldscope - Did you know that Foldscope paper microscopes perform on par with other educational microscopes? 👀 Foldscope was invented with the mission of making science accessible for everyone. Now anyone can
Mic-UK: Projects for the Foldscope: Part I. Understanding single lens microscopy – lens magnification and how to measure
Foldscope Kit, Personal paper microscope kit, Foldscope + 2 plain glass slide | eBay