Scientific Instrument Society 25th Anniversary Exhibition
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32 Circular Slide Rule
This ivory and silver slide rule has a double radius logarithmic line on the stock, a single radius logarithmic line on both sliders and is stamped ‘LAMB LONDON’. It was made about 1827 by the watchmaker and engraver Joseph Lamb, of 6 Upper Marylebone Street, London.
The curious aspect of this slide rule is that it is almost identical to an earlier slide rule produced by the instrument maker Anthony Lamb (fl.1703-1784). As an associate of the notorious highwayman Jack Sheppard, Anthony Lamb was transported to Maryland in 1724 where he continued his trade. Perhaps the two were related and Joseph Lamb copied an example in his possession, passing it off as his own invention.
English ca.1827.
See: Joseph Lamb, Description of a Concentric Circular Proportioner, London 1827.
Pigot & Co., London Directory, 1832.
Watkins and Hill, Catalogue, London 1832, p.20.
Transactions of the American Philosophical Society, Volume 74, Part 1, 1984, pp.53-63.
Silvio A. Bedini, At the Sign of the Compass and Quadrant, The Life and Times of Anthony Lamb.
Collection: Peter Delehar, London
Objects lent by Peter Delehar, London:
08. Circular Slide Rule on a Snuff Box, by Hoyau, Paris, 1816
11. Reversible Circular Slide Rule, English, c.1840
25. Slide Rules - a Selection of the Original Pocket Calculators
26. Javal's Ophthalmic Slide Rule, by A. Cretes, Paris, c. 1875
27. Triangular Slide Rule with Four Sliders, by Elliott, London, c. 1870
28. Oil Calculation Slide Rule Designed by Forrest M. Towl, New York, c. 1889
29. Master Rule and Gauging Slide Rule, by Dring & Fage, London, 19th Century
30. Anderson Celluloid Gridiron Slide Rule, by Casella & Co, London, c. 1903
31. Slide Rule in a Drawing Scale, by J. Casartelli, Manchester, c. 1870
33. Roubicek Circular Slide Rule for Surveying, by Neuhöfer & Sohn, Vienna, c. 1870
34. Annular Slide Rule, by Elliott Brothers, London, c. 1875
36. Box Sextant with Integral Slide Rule, by Troughton & Simms, London, c. 1870