earth inductor compass

American  

noun

Aeronautics.

1. a compass actuated by induction from the earth's magnetic field.

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earth inductor compass British  

noun

1. Also called: inductor compass.  a compass that depends on the current induced in a coil revolving in the earth's magnetic field

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Example Sentences

An earth inductor compass, a magnetic compass on the conventional instrument board and maps were his navigating facilities.

From Time Magazine Archive

Morris M. Titterington, 35, and lady friend, in a plane smash; at Pottsville, Pa. He founded the Pioneer Instrument Co., invented the earth inductor compass, said to have made long airplane flights possible.

From Time Magazine Archive

He had a tachometer, and an altimeter, an earth inductor compass, a drift indicator, and—” Captain Bill interrupted.

From Famous Flyers And Their Famous Flights by Grayson, J. J.

Then there’s that most important instrument, the earth inductor compass.

From Famous Flyers And Their Famous Flights by Grayson, J. J.