instrument used for navigation and orientation / From Wikipedia, the free encyclopedia

A compass is a navigational tool that uses magnetism. It has an arrow which points in the direction of the North Magnetic Pole. or other places where there are few landmarks.

Liquid filled compass
A drawing compass

The first compass was invented by ancient Chinese in the Han Dynasty. It was a large spoon-like magnetic object made of magnetite ore set upon a square bronze plate.[1]