McDermotts Screw Propeller Computer

McDermotts Screw Propeller Computer

£90

Dimensions

18 cms

Circa

1904

Country of manufacture

UK and Ireland

Categories: Scientific, Calculating

Description

A cardboard Calculator with directions for operating in original leather case

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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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