History from below mathematics instruments and archaeology stephen johnston
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History from below Mathematics, instruments and archaeology Stephen Johnston Museum of the History of Science University of Oxford. Astrolabe by Erasmus Habermel, Prague, 1590s?. Inch scale, with numerals from 1 to 9 (almost) decipherable.

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History from below Mathematics, instruments and archaeology Stephen Johnston

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History from below

Mathematics, instruments and archaeology

Stephen Johnston

Museum of the History of Science

University of Oxford


Astrolabe by Erasmus Habermel, Prague, 1590s?


Inch scale, with numerals from 1 to 9 (almost) decipherable


Timber with a square cross-section (b = c), and for which the volume is to be determined


Leonard Digges, Tectonicon (London, 1556)


Leonard Digges, Tectonicon


Folding rule by Humphrey Cole, London, 1574


Leonard Digges, Tectonicon


Longport House carpenter’s rule, 1635


How to reckon up solid timber when b does not equal c?


Longport rule Square root table

Product4 x 155 x 126 x 10

Root 7,14 7,15 7,15

Product5 x 168 x 10

Root 8,18 8,19

Product6 x 168 x 12

Root 9,16 9,15

Square roots expressed in inches and twentieths


La Natiere wreck, St Malo


Samuel Sturmy,

The mariners magazine, or, Sturmy's mathematical and practical arts (1669)


La Natiere wreck, St Malo: “1648 IC”


One foot carpenter’s rule

Whipple Museum of the History of Science University of Cambridge


Rule with board scale and timber and board tables, 1648

Whipple Museum


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