The Royal Society - (a) Replica of a single-lens microscope by Leeuwenhoek (Image by Jeroen Rouwkema. Licensed under CC BY-SA 3.0 via Wikimedia Commons). (b,d) Photomicrographs taken using simple single-lens microscopes including
File:Leiden Museum Boerhaave single lens microscope 071815 06.jpg - Wikimedia Commons
Van Leeuwenhoek's microscope and its observations. (A) Hand-made single... | Download Scientific Diagram
Molecular Expressions Microscopy Primer: Museum of Microscopy - Single-Lens Gould-Style Microscope
Single lens microscopes | Lens on Leeuwenhoek
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Single lens microscopes | Lens on Leeuwenhoek
300 X-1200 X Laboratory Single Lens Compound Microscope