[n.d. c 1880.]
Ink drawing surrounded by an ornate gold and blue patterned frame. 114 x 44mm. 4½ x 1¾". With frame 260 x 171mm. 10¼ x 6¾".
The Centigrade Thermometer, as proposed by Anders Celcius (1701-1744), as a Celcius temperature scale. He originally called his scale centigrade dreived from the latin for a "hundred steps"; however, for many years it was simply referred to as the Swedish thermometer.
[Ref: 18376]  £260.00