The Mechanical Engineer Circular Watch Form Slide Rule

The Mechanical Engineer Circular Watch Form Slide Rule

£190

Circa

1900

Country of manufacture

UK and Ireland

Category: Calculating

Description

‘The Mechanical Engineer’ circular slide rule in good working order, single-sided

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GB Fletcher

Fletcher Wallis

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.

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