Otto Schulze’s invention, you might say, was good for 110 miles per hour and 110 years – and beyond. Schulze, a German engineer, registered the eddy-current speedometer at the Imperial Patent Office ...

A nondestructive testing technology called eddy current array (ECA) is capable of driving numerous eddy current coils that are positioned next to one another in the same probe assembly. In the probe, ...

From '65-'93, Mustang speedometers were cable-driven mechanical instruments that worked on the eddy current principal-a magnet whirling around inside a shell attached to an indicator needle. The ...