Luopan

A luopan is a Chinese tool used to measure things or for orientation. It is a kind of compass with a round-shaped disc that is filled with markings and other features. The markings can show directions, directions of mountains or other features, or even the locations of hidden objects. People use the luopan to help them find their way when they are lost or for navigation when they are exploring. It is also used in feng shui, a type of Chinese philosophy, to help pick the right spot for different activities.