The Standard Compass of Chatur Museum is a 1310 years old piece made by Chatur Museum, a engineer living in Ulaanbaatar.
Considering its age and the quality of the work, people consider it of considerable value.
It is engraved with asian patterns and some symbols pertaining to Jainism.
This piece doesn't exist, but as a legend. It is said that in the year 697, Chatur Museum, the owner, made use of it in Ulaanbaatar to empower the Museum family. Now it is lost, or broken, we will never know.