"I think we could get along just fine with nothing but mechanical devices."

Having found the little mechanical device, I didn't know what to do.

This may be done by hand or with a mechanical device.

On the outside, the thing was a mechanical device, with moving parts even.

There are no mechanical devices to make the job easier.

I moved in for a closer look at the obviously mechanical device.

"I'm very good with mechanical devices, and I'd be happy to take a look at it."

This mechanical device was, in some areas, driven by water power.

You control most elements in the car directly by way of various mechanical devices.

What you have seen just now was the breakdown of a mechanical device.