Two Ivory Slide Rules for Proof Calculations in Wine and Spirit Trade

Two Ivory Slide Rules for Proof Calculations in Wine and Spirit Trade

£200 each

Dimensions

12 inches long

Circa

1850

Country of manufacture

UK and Ireland

Category: Calculating

Description

Two ivory slide rules for use in wine and spirit trade for customs duty and other calculations, in good condition with original leather cases. Top item by T. O. Blake. Bottom by H. Carr Gibbs

Thes items can only be sold within the European Union

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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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