This need was a major motivation for the development of accurate mechanical clocks.

This made it extremely difficult to make Japanese mechanical clocks.

The track includes sound effects such as the ticking of a mechanical clock.

A number of gears worked together, much like they do in a mechanical clock.

However, there is agreement that mechanical clocks existed by the late 13th century.

It was fitted with a mechanical clock during the mid 14th century.

The French mechanical clock in the tower is from 1892.

The thing looked like some sort of mechanical clock.

Up until now, a mechanical clock had always accompanied the globe.

However, mechanical clocks were not widely used in the West until the 14th century.