A good textile microscope in excellent condition with original lacquer and case. Marked ‘Pat 1740970 Chas Lowinson New York’ and serial number 8701. There are three measuring scales on a nickel rotating piece. Marked F in mm, a one inch scale and another. There is quick release mechanism and a knurled fine adjustment. The focus adjustment screw is missing (see image)
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Fletcher Wallis sells objects and books relating to the history of science, medicine and technology from his unit at Admiral Vernon Arcade Portobello Road. He publishes books through Vernier Press, including Antique Medicine Chests, and Corkscrew Patents from 1795. He has been dealing for thirty five years.