18th Oct, 2019 12:00
Fine Photographica & Instruments of Science & Medicine
Ewart's Cattle Gauge Slide Rule
English, c. 1832-1842, in boxwood with ivory slide, stamped 'The Cattle Gauge & Key to the Weighing Machine arranged by J Ewart Newcastle on Tyne J Tree Maker Charlotte St Blackfrs. Rd London, with scales for oxen, heifers, bulls, sheep and swine', 23.6cm.
Sold for £180
Result plus buyers premium
English, c. 1832-1842, in boxwood with ivory slide, stamped 'The Cattle Gauge & Key to the Weighing Machine arranged by J Ewart Newcastle on Tyne J Tree Maker Charlotte St Blackfrs. Rd London, with scales for oxen, heifers, bulls, sheep and swine', 23.6cm.
Auction: Fine Photographica & Instruments of Science & Medicine, 18th Oct, 2019
