Appraisal: French Pendulum Clock, ca. 1865, from Vintage Baltimore. Check out Gordon S Converse's appraisal of this French pendulum clock, ca. 1865, in Vintage Baltimore.
Using this design, you can construct an electromagnetically impulsed pendulum clock with a 1-second beat. On the prototype, the pendulum rod is 115cm long with a bob adjusted to make it beat every ...
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