The Thermoscope The predecessor to the thermometer, the thermoscope is a thermometer without a scale; it indicates differences in temperature only ie it can show if the temperature is higher, lower or the same, but unlike a thermometer it cannot measure the difference nor can the result be recorded for future reference. The thermoscope was widely used by a group of scientists in Venice that included Galileo. It was only a small step from the thermoscope to the thermometer.

Address: Leconfield Industrial Estate Cleator Moor Cumbria CA25 5QE England
Telephone: 44 (0)1946 816 624
Fax: 44 (0)1946 816 600
Website: http://www.brannan.co.uk/pages/thermometers/invention.html