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Grasshopper Clock. Based on the first marine chronometer made by the clock maker John Harrison (1693-1776), this extraordinary instrument features the "grasshopper escapement" operated by two inter-linked pendulums that compensated for the motion of a ship. Case is solid mahogany. Eight-day fusee movement is solid brass, hand polished and goldplated. Inside the drawer are a winding key and a paperback copy of Dava Sobel's "Longitude". $12,500

Grasshopper Clock. Based on the first marine chronometer made by the clock maker John Harrison (1693-1776), this extraordinary instrument features the "grasshopper escapement" operated by two inter-linked pendulums that compensated for the motion of a ship. Case is solid mahogany. Eight-day fusee movement is solid brass, hand polished and goldplated. Inside the drawer are a winding key and a paperback copy of Dava Sobel's "Longitude". $12,500

A working replica of Harrison’s H3 timekeeper.

A working replica of Harrison’s H3 timekeeper.

H1 - The first seaworthy clock, created by Harrison, who solved the longitude problem. Inspiring! National Maritime Museum in Greenwich

H1 - The first seaworthy clock, created by Harrison, who solved the longitude problem. Inspiring! National Maritime Museum in Greenwich

A brass congreve style rolling ball clock

A brass congreve style rolling ball clock

How to Make a Grandfather Clock: DIY Standing Clock Plans

How to Make a Grandfather Clock: DIY Standing Clock Plans

Andre-Charles Boulle (1642-1732). Podchasniki.

Andre-Charles Boulle (1642-1732). Podchasniki.

Wooden Gear Clock Plans from Hawaii by Clayton Boyer

Wooden Gear Clock Plans from Hawaii by Clayton Boyer

Harrison's Marine Chronometer number 1 (H1) Constructed between 1730 and 1735, the H1 is essentially a portable version of Harrison's precision wooden clocks. It is spring-driven and only runs for one day (the wooden clocks run for eight days). The moving parts are controlled and counterbalanced by springs so that, unlike a pendulum clock, H1 is independent of the direction of gravity.

Harrison's Marine Chronometer number 1 (H1) Constructed between 1730 and 1735, the H1 is essentially a portable version of Harrison's precision wooden clocks. It is spring-driven and only runs for one day (the wooden clocks run for eight days). The moving parts are controlled and counterbalanced by springs so that, unlike a pendulum clock, H1 is independent of the direction of gravity.

Pendulum Clocks | Vaerst 2738 Rectangular Slate Pendulum Clock

Pendulum Clocks | Vaerst 2738 Rectangular Slate Pendulum Clock

A limited edition grand orrery, George Gyori, recent, mounted on a wooden ebonised base, separated by brass and wooden columns, engraved wit...

A limited edition grand orrery, George Gyori, recent, mounted on a wooden ebonised base, separated by brass and wooden columns, engraved wit...

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