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Tower Clock Movement
1790s

Marking time in Frederick, Maryland
This iron-framed clock movement was installed in the steeple of the German Reform Church in Frederick, MD, where it told the time for not only the congregation but also the entire town from the 1790s until it was donated to the Smithsonian in 1927. It was made by town resident Frederick Heisely, a Revolutionary War veteran who learned watchmaking from his father-in-law, George Hoff, a German immigrant from Lancaster, PA.

Notes
46" high x 46" wide x 40" deep
Frederick Heisely (1759-1843)
George Hoff (1733-1816)
Gift of the City of Frederick, Maryland

Learn more!
· Frederick Heisely
· Heisely Newspaper Advertisement, 1786
· "Taking the Measure of Time" by Per Ola and Emily d'Aulaire, "Smithsonian" magazine, December 1999
· "On Time," an NMAH Virtual Exhibition

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