Zedonk already provides a preset list of eight units of measurement for you to choose from. You should be able to find one from this list but if you need to create a new one you can do it from Settings
Material Settings - Units of Measurement
Zedonk already provides a preset list of eight units of measurement for you to choose from. You should be able to find one from this list but if you need to create a new one you can do it from Settings