A brass telescope/microscope compendium by L. E. Franks Optician Leeds. The optics are good but the box is not. ie not original and probably a sikes hydrometer box
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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.