Prototypes - The cover of my book about 19th and early 20th century inventions and how they work.
Spreads about Balance Pycnometer - Book describing how a Balance Pycnometer measures the weight of liquids. (book in Dutch)
Spreads about Balance Pycnometer - Book describing how a Balance Pycnometer measures the weight of liquids. (book in Dutch)
Measuring device for heat-effect of an electric current
Measuring device for heat-effect of an electric current
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19th and 20th century inventions