Christiaan Huyghens was a Dutch scientist who lived in the seventeenth century (1608-1647). He is known for several inventions and discoverys, all in some way related to shipping.
He solved one of the major problems that the Toricelli weather instrument showed: the degree of readability. He did this by placing a "multiplicator" onto the mercury tube. In the now U-shaped instrument couloured alcohol was filled onto the mercury surface. All changes in the mercury column where multiplied with a factor ten, and transferred to the surface of the couloured alcohol. The scale of the Toricelli became tenfold enlarged, and due to the couloured fluid, accurate and even from a distance to read.
Model K216

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