GREGORY TOBIAS / CHEMICAL HERITAGE FOUNDATION / SCIENCE PHOTO LIBRARY GREGORY TOBIAS / CHEMICAL HERITAGE FOUNDATION / SCIENCE PHOTO LIBRARY
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Nicholas Kratzer (c.1487-1550), German astronomer, mathematician and horologist, surrounded by scientific instruments. Kratzer arrived in England in 1516, later being appointed astronomer and clock-maker to King Henry VIII. This 19th-century engraving is based on a 16th-century painting. The painting was by his friend Hans Holbein the Younger (1497-1543) and dates from 1528 (year at lower left). Holbein visited England from 1526, eventually settling there, and like Kratzer was introduced to the royal court by Sir Thomas More. This engraving, by French artist Francois Jacques Dequevauviller (1783-1848), dates from 1818.
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