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There are 5 objects associated with "Object-clock".

Astronomical pendulum by Utzschneider und Fraunhofer, used by the 1874 Dutch expedition on Reunion

Astronomical pendulum by Utzschneider und Fraunhofer, used by the 1874 Dutch expedition on Reunion

The director Frederik Kaiser of The Leiden Observatory bought this pendulum clock in 1838. It has a compensated pendulum after Mahler. The clock was lent to the 1874 Dutch expedition to Reunion.

Utzs...

Clock

Clock

Clock by Thomas Tompion, London, ca. 1675.

As the most accurate clock at Harvard in 1761, this one-hundred-year old, "excellent pendulum clock" was taken to Newfoundland by John Winthrop to obser...

Clock, Regulator

Clock, Regulator

Astronomical regulator clock made in London by John Ellicott ca. 1765 to replace similar clock lost in the Harvard Hall fire of 1764.

Pendulum clock by D. Quare, London 1701

Pendulum clock by D. Quare, London 1701

One of the older clocks used in the Bologna Specola, by Daniel Quare (1649-1724). It has inlaid wooden case, dial plate in silver and inlaid brass. The hours on the dial are in Roman numbers, the minu...

Sidereal Clock

Sidereal Clock

Sidereal clock (regulator) marked "E. Howard & Co., Boston".

This was one of eight precise sidereal clocks made for the American Transit of Venus expeditions of 1874. It was also used by Albert Mi...

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