Important Collectors Wristwatches Po...
Geneva, Hotel Des Bergues, Oct 21, 1995
LOT 489
Not signed, Swiss, circa 1820. Fine and unusual, silver skeletonised Thermometer with compass.
CHF 1,500 - 2,000
Sold: CHF 1,150
C. Three body, Empire with reeded band and glazed back. D. Silver chapter ring on the front engraved with graduation in Reaumur and Fahrenheit degrees. Compass on the back with knurled wheel on the band to set the hand to the north direction. M. Gilt brass, constructed on a principal similar to that used by Houriet, Jiirgensen and Breguet for their thermometers, with bimetallic curb, rack and pinion. Signed on the dial. In very good condition.
Notes
This type of bimetallic thermometer is illustrated by
Urban Jiirgensen in Principes Généraux de l'Exacte
Mesure du Temps par les Horloges, 1805, pl. XIX.