In some cases they are vital, yet in others a mechanical machine can match or beat overall performance and profitability.

The electronic systems weigh about half as much as the mechanical machines and are generally easy to use.

The first test used was a mechanical machine that could test response time.

Most times horses are very sensitive to mechanical machines and loud noises.

The museum owns over 300 mechanical machines, and is one of the largest privately owned collection of such games in the world.

This is the first time I have ever heard music with any soul to it produced by a mechanical talking machine.

New York City officials plan to spend $35 million to replace mechanical machines now in use.

He didn't act like a human being-- walked more like a mechanical machine.

With over 1,200 objects it has the world's largest collection of historical mechanical calculating machines.

To play back an acoustic recording, a mechanical reproducing machine reversed the process.