CALCULATORS

CALCULATORS

Various

Description

THE LOCKE ADDER-1st patent 1901 invented C. Locke (1865-1945)-good condition-USA £250

The Roplex Calculator-French- Double-sided, original case-£120

The Arlo calculator- The Hague, holland-aluminium Case-good condition-£90

French Ready reckoner-paper disc, a bit grubby, \”Conversion des Aunes Usualles en Metres\” French-Paris, Rue Navarin 14-£120

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GB Fletcher

Fletcher Wallis

Fletcher Wallis sells objects and books relating to the history of science, medicine and technology Arcade. He publishes books through Vernier Press, including Antique Medicine Chests, and Corkscrew Patents from 1795. He has been dealing for forty eight years.

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