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03 the diagram of the workings of a clock from Vitruvius' Book IX of De Architectura (1513 first edition). 04 Christiaan Huygens, Horologium oscillatorium... Muguet, Paris 1673; a line diagram of the pendulum clock invented by Huygens.
01 Ferdinand Berthoud, Essai sur l'Horologie , Jombert, Musier, & Panckoucke, Paris, 1763. |
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