Air thermoscope, copy of an original in Museo di Storia della Scienze, Florence; associated with Galileo 16th century Air thermoscope 1500-1599
Galileo's thermoscope, on simple wooden stand Galileo's thermoscope, on simple wooden stand 1851-1950
Reconstruction of Philo's thermoscope, primitive temperature measuring device invented by Philo of Byzantium, 2nd century B.C. Reconstruction of Philo's Thermoscope 200-101 BCE