anniversary clock

(redirected from Torsion pendulum clock)
Also found in: Wikipedia.

anniversary clock

[‚an·ə′vərs·ə·rē ‚kläk]
(horology)
A clock that can run as long as 400 days on a single winding because of a slow torsion pendulum. Also known as four-hundred-day clock.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Mentioned in ?