3 Rules to Measure Areas on Maps

3 Rules to Measure Areas on Maps




Country of manufacture

UK and Ireland

Categories: Calculating, Surveying Instruments & Mining


3 boxwood rules in original pine box, two by Troughton and Simms, and one by Stanley. Instructions for use see images taken from ‘drawing and Measuring instruments, J. F. Heather 1884. All undated but c1850

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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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