A Vernier-like device for measuring the relative expansion of different metals when heat is applied. Engraving by T. Jefferys.

Reference:
473449i
Catalogue details

Licence: Public Domain Mark

Credit: A Vernier-like device for measuring the relative expansion of different metals when heat is applied. Engraving by T. Jefferys. Wellcome Collection. Source: Wellcome Collection.

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