The default units in Tekla Structures depend on the settings in File > Settings > Options > Units and decimals. You can change these default settings in Organizer to view a different unit system, unit type, and precision in Object Browser and in Categories.
To open Organizer , click Manage on the ribbon and then click Organizer.
Clickin the upper-right corner of Organizer to open the Settings.
Go to the Units tab.
Select a unit system from the list.
Select a unit from the list.
Select a precision from the list.
Use the precision option for Others if you want to define the precision for quantities other than distance, area, volume, or weight.
You can set the unit of an individual property column in OrganizerSettings by clicking in the column. These individual settings override the Units tab settings. Individual settings are useful if you want to show the length in imperial and metric units in one template, for example.