2. The escapement, whereby the pendulum controls the speed of going;
3. The train of wheels, urged round by the weight or main-spring,
together with the recording parts, i.e. the dial, hands and hour motion
wheels;
Encyclopaedia Britannica, 11th Edition, "Clervaux" to "Cockade" Volume 6, Slice 5 · 第 14 / 41 题