Museo Galileo
Virtual Museum
De Luc barometer
    • Setting:
      Room XV
    • Inventor:
      Jean-André De Luc
    • Maker:
    • Date:
      late 18th cent.
    • Materials:
      wood, ivory, glass
    • Dimensions:
      height 960 mm, width 100 mm
    • Inventory:
    • De Luc barometer (Inv. 1556)

Portable barometer of the type invented by Jean-André de Luc. The instrument is enclosed in a wooden box with opening front. The two arms of the barometric tube are connected by a metal container fitted with a tap. In transport, the mercury was moved into the longer arm of the barometric tube. The barometric scales are printed on paper and divided into Paris inches. The instrument is fitted with a plumb bob to check its vertical position and a mercury thermometer with Fahrenheit and Réaumur thermometric scales.