Bud twirled the powerful screw mechanism and the outer port of the air lock slid open.

He bought a screw mechanism so that the point could be moved very close to the sphere in a controlled fashion.

Uniquely it was the sole 'slow-cone' interrupted screw mechanism to enter service after 1920.

It uses a cable and a screw mechanism to provide the operator precise control over an engine's operation.

The cannon employed a screw mechanism which would push the cylinder forward when it was in position.

There are actual clamps that consist of adjustable arms and a screw mechanism to tighten the arms.

Machinist's levels provide screw mechanisms to center the bubbles.

This head includes the screw mechanism for tightening the clamp.

Town hall - erected in 1902, second floor built-up while lifting the roof by a screw mechanism in 1927.

In 1793, Kulibin constructed an elevator that lifted a cabin using screw mechanisms.