Three dutch inventions dating from 17th century keysia cole dating
1600 onwards are the Frisian watchmaker Vibrandi of Leeuwarden and the Haarlem-based Salomon Coster.Exquisite examples of their work can be found in museum collections in Amsterdam.in Zaandam (with its quintessential representative survey of Dutch clock history). The Utrecht collection is splendidly described by Dr Jan Jaap Haspels (1994) and the one from Zaandam by Prof C. Furthermore, important Dutch clocks can be found in foreign museum collections like the Metropolitan Museum of Art in New York, The Paris Louvre or German museums in Dresden, Kassel, Munich, Stuttgart and Wuppertal.
Coster also made small horizontal table clocks of the Bavarian type, known from the Vehmeyer collection.
(click to enlarge) An example of a 'Hague'spring wall clock by Salomon Coster, c. Unfortunately, amongst horologists I still encounter anything but consensus, just as Huygens must have experienced, introducing as his original ideas, his inventions and mechanical improvements, like the construction of the pendulum clock, his endless rope, the balance spring, the remontoir or his equation and maritime timekeepers.
There were the claims by rivals as Simon Douw of Rotterdam and contemporary Galileo followers concerning his pendulum system or by the French Abb de Hautefeuille and the English inventor Dr Robert Hooke concerning the invention of the balance spring.
The Ashmolean Museum shows two oval Vibrandi watches out of a total of eight Dutch watches.
(David Thompson, 'Watches in the Ashmolean Museum, Part I' Antiquarian Horology, September 2000).
The 'Golden Age': Christiaan Huygens and collaborators.