Standard Mercury Thermometer, 1890
Standard mercury thermometer, 95-206ºC, divided in tenths of a degree, No. 4918, by Tonnelot, Paris, 1890.
Mercury thermometer in brass case by Tonnelot, Paris, France, 95º- 206ºC, divided in tenths of a degree, No. 4918, 1890.
Standard mercury thermometer, 95-206ºC, divided in tenths of a degree, No. 4918, by Tonnelot, Paris, 1890.
Brass case for mercury thermometer, 95º-206ºC, divided in tenths of a degree, No. 4918, Tonnelot, Paris, France, 1890.