Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,972 pages of information and 229,026 images on early companies, their products and the people who designed and built them.

John Marke

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JD 2017 Florence12.jpg
JD 2017 Florence13.jpg

Maker of mathematical and astronomical instruments active in London between 1665 and 1679. Worked with Henry Sutton (c. 1637-1665), and succeeded him in 1665.[1]

The Museo Galileo (Florence) has on display a 'trigonometric machine' for determining the value of trigonometric functions (sine and cosine) of a known angle and vice versa. See photos. The machine was invented by Sir Samuel Morland in 1663 and built by John Marke in 1670. For more information see Museo Galileo webpage for Marke's Trigonometric Machine.


See Also

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Sources of Information

  1. [1] Museo Galileo: John Marke webpage