Paersa

A paersa (plural: paersi) is a form of measurement commonly used by the Shadow Empire.

Age
It is unknown when paersi were first used. Many people assume that it was made in the 74000s.

Length
The closest equivalent of a paersi is a foot. One foot equals to .452 paersi. To transfer a foot into paersi, take the number of feet and multiply by .452. (Ex: 20 x .452 = 9.04)