Important Collectors Wristwatches Po...
Geneva, Hotel Des Bergues, Oct 21, 1995
LOT 110
Spencer and Perkins, London, c. 1780 A watch-form pedometer.
CHF 1,200 - 1,400
C. gilt brans covered in green fish-skin with suspension ring. D. white enamel, Arabic numerals, main dial for paces, subsidiary dials for 1 and 12 miles, blued steel hands. M. Four wheel, plated, extended arm attached through a chain to a fork meshing with a pinion. At each step the pinion turns by an amount limited by the fork, which movement is transmitted to the train which serves siinply to count the wearer's steps and couvert them into paces and miles. Diam. 56 mm. In good working order.
Notes
Note: Unlike the previous model this example is
mountedn1 a watch case with its suspension ring at
what would be the 6 o'clock position and with the
chain arm tumed through 90°, presumably so that the
instrument can be attached to a saddle, the chain arm
being linked to the horse's leg.
Literature
Alfred Chapuis & Eugène Jacquet, La montre
automatique ancienne, un siècle et demie d'histoire,
Neuchâtel, 1952, ch viii esp. pp. 190-93.