Sales totals are hammer price plus buyer’s premium and do not reflect costs, financing fees or application of buyer’s or seller’s credits.
- £1,000 - £1,500
- ($1,660 - $2,490)
Fine Scientific Instruments
13 December 1996
London, South Kensington
A 19th-Century lacquered-brass mechanical integrator,
signed J. Amsler, numbered 830, and stamped on the limb Stanley, London, the assembly comprising a main frame with two hardened steel wheels and counterpoise, the whole pivoted on the shaped bridge, raised with gear motion, steel fulcrum, fretted bell-shaped sub-assembly with articulated arm and bone/ivory scale planimeter attachment, with accessories, in fitted oak case -- 14.1/4in. (36.2cm.) wide
Jakob Amsler, Professor of Mathematics at the University of Schafhausen in Switzerland constructed his polar planimeter in about 1854. The integrator, a further development of this instrument, was specifically designed for use by naval architects for the measurement of metacentric heights etc.
c.f. Prof. Gerard L'E. Turner, Nineteenth Century Scientific Instruments, p.227-229
W.F. Stanley & Co. Ltd., Catalogue 1912 p.177
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