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This pyrometer measures the thermal expansion of metals. The form was designed by Pieter van Musschenbroek (1692-1761), a Dutch natural philosopher who spent most of his career teaching in Leiden. This example has a marble base, and a dial (5.25 inches diameter) marked from zero to sixty. The "Pixii Á Paris" inscription refers to an important family of instrument makers active in Paris throughout the first half of the nineteenth century.
Currently not on view
Object Name
date made
ca 1820-1830
Maison Pixii
place made
France: Île-de-France, Paris
base: 12 1/2 in x 6 1/2 in x 2 1/2 in; 31.75 cm x 16.51 cm x 6.35 cm
overall: 13 1/2 in x 6 1/2 in x 2 1/2 in; 34.29 cm x 16.51 cm x 6.35 cm
overall: 13 5/8 in x 6 1/4 in x 13 in; 34.6075 cm x 15.875 cm x 33.02 cm
ID Number
catalog number
accession number
Science & Scientific Instruments
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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