Engraving depicting a Breguet's thermometer. A Breguet's thermometer, also called a spiral thermometer, is a type of thermometer which uses the expansion of metal under heat to produce a measurement more sensitive, and with a higher range, than both mercury and air thermometers. Dated 19th Century

---

Size: 4410px × 4756px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, air, archival, archive, bimetallic, breguets, century, cold, engraved, engraving, expansion, gold, heat, historical, history, hot, illustrated, illustration, measurement, mercury, metal, physics, platinum, science, scientific, sensitive, silver, spiral, strip, temp, temperature, thermometer