·noun A body so suspended from a fixed point as to swing freely to and fro by the alternate action of gravity and momentum. It is used to regulate the movements of clockwork and other machinery.
A gravitating instrument for measuring the motion of a ship and thereby assisting the accuracy of he...
The Sailor's Word-Book
An instrument for determining the velocity of projectiles. The original pendulum was of very massive...
See ballistic pendulum. ...
An improved pendulum to facilitate the accurate elevation and depression of guns on board ship, by m...