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Bartholomew Fair
The Marsham Children
19th October 1952
with owners including King George V
Tycho Brahe's triangular astronomical sextant Product:Greetings card Bartholomew FairEngraving of Tycho Brahe's triangular astronomical sextant for the determination of distances ('Sextans astronomicus trigonicus pro distantiis rimandis'), in his Uraniborg observatory on the island of Hven. Illustration from Astronomia instauratae mechanica, by Tycho Brahe (Hamburg, 1598). Original: engraving. 1598
