Much of the equipment will require precise calibration or alignment by the mud logger to provide accurate readings.

Commercially made Geiger counters are expensive and require frequent calibration.

Instruments used for purely research applications or in educational settings generally require less frequent calibration.

Although radiometers are simple, they do require periodic calibration and care.

The Bush strategy thus requires careful calibration.

Many forms of mechanical or electronic equipment require periodic intrusive calibration.

This is important because many devices for measuring low flow speeds in turn require calibration.

Before use, the device requires calibration with a series of standard solutions of the ion to be tested.

Does our system require calibration in the context of the Long War?

For making position-relevant statements about the welding process, those systems require calibration of the relative position.