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There are 2 objects associated with "Cambridge,MA,UnitedStates".

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...

Quadrant, Astronomical

Quadrant, Astronomical

Quadrant engraved "J. Bird, London," ca 1764.