Hannyngton Extended Slide Rule
£1500
Circa
1880
Country of manufacture
UK and Ireland
Description
An example of Major General Hannyngton’s extended slide rule allowing for more accurate calculations. Made by Aston and Mander.
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Dealer information
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.
