The founder died in 1859 but his son continued to trade under the original name and took out two patents during the 1850’s and 1860’s relating to improvements to compasses
the index arm is also inlaid with a brass plaque stating the recipient’s name
His first venture was the partnership of Gilbert & Wright
It is likely that as was largely the case for the sympiesometer
William IV Leather Cased Travel Thermometer by Thomas Harris & Son, London Francis Linsell West The founder died in 1859For sale, a William IV Leather Cased Travel Thermometer by Thomas Harris & Son, London. Comprised of an 8 inch arched top silvered brass scale plate. The beautifully engraved Fahrenheit scale reads from 0 220 degrees and has indications for Water Boils, Spirits Boil, Fever Heat, Blood heat, Summer Heat, Temperate and Freezing. It is engraved to the prestigious maker, Thomas Harris & Son, London to the top of the scale and has a single hole to the top