A good brass folding lens by Aitchison & Co. Opticians to HM Govt., London and Leeds, most likely c1914 (5.5cmx 3cm) and a good brass Coddington type lens, diameter 4.5cm. Both in good condition, polished brass finish. No chips to lenses
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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.