More than 130 years after its installation atop the Cambridge City Hall, a mechanical tower clock — wound by hand each week — continues to chime. Crimson photographers followed David W. Graf, the ...

For the first time in more than a century, the inner workings of Redkey’s historic town clock are no longer tucked away 45 ...

The familiar tick-tock of wall clocks originates from the escapement mechanism, which controls gear movement in precise steps. While our brains perceive two distinct sounds, clocks actually produce ...

The tick-tick sound comes from the movement of gears and parts inside the clock. In mechanical clocks, a part called the escapement mechanism controls this sound.