The flux gate continuously senses the Earth's magnetic field, and a servo mechanism constantly corrects the heading indicator.

A servo mechanism in the finder drove the aperture lever on the lens, stopping it down to the correct value.

Human control of high altitude wind power systems is typically accomplished through servo mechanisms, as the tether tensions are too great for direct manual operation.

In optical recording systems, servo mechanisms accurately follow the track in three dimensions: radial, focus, and rotational speed.

Lofstrom believes that this instability also can be controlled in real time by servo mechanisms, although this has never been attempted.

Swirl flap position is adjusted by an electrical or vacuum-activated servo mechanism which is under the control of the engine management system.

A servo mechanism had been set up to make periodic adjustments that would hold it on its course.

Some larger steam engines employ a power reverse, which is a servo mechanism, usually powered by steam.

The mechanism usually includes an angular reference device such as a mechanical or optical gyro and servo mechanisms.

One moving head accessed each data surface (20 total), one more head was dedicated to the servo mechanism.