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With its double pulley, the mechanism of this early 18th century, weight driven jack is capable of running two spits at the same time. This great example is operational in the kitchen of Wreay Farm in the north of England.

With its double pulley, the mechanism of this early 18th century, weight driven jack is capable of running two spits at the same time. This great example is operational in the kitchen of Wreay Farm in the north of England.

Four-way sand glass, Italian, 17th century

Four-way sand glass, Italian, 17th century

Museum of Mining and Gothic art in Leogang ( Salzburg state ). Gothic collections: Wall clock ( 1510 ) from Switzerland or Southern Germany. The window shows Holy Roman emperor Maximilian I.

Museum of Mining and Gothic art in Leogang ( Salzburg state ). Gothic collections: Wall clock ( 1510 ) from Switzerland or Southern Germany. The window shows Holy Roman emperor Maximilian I.

And So It Goes...: Art deco clock. Circa 1930s

And So It Goes...: Art deco clock. Circa 1930s

An ancient sundial

An ancient sundial

Exquisite Handcrafted Miniature Solar System, Planetarium, Orrery with Embellished Automatic Turntable Display Dome, $225.00

Exquisite Handcrafted Miniature Solar System, Planetarium, Orrery with Embellished Automatic Turntable Display Dome, $225.00

Mark Zirpel; "Orrery #1"

Mark Zirpel; "Orrery #1"

Tellurium    France, 18th century    The British Museum

Tellurium France, 18th century The British Museum

ORRERY, 1791.   Orrery made by James Giles of London, England, 1791.

ORRERY, 1791. Orrery made by James Giles of London, England, 1791.

Lubeck, Astronmical clock, St.Marien Church, Germany

Lubeck, Astronmical clock, St.Marien Church, Germany