Wis. Stat. § 840.12
In all actions relating to real property the court may by order give any party thereto leave to make any survey of any premises affected by such action, or of any boundary line of such premises, or between the lands of any of the parties and the lands of other persons, when satisfied that such survey is necessary or expedient to enable either party to prepare that party's pleadings in the action. The order for such survey shall specify the premises or boundary lines to be surveyed, and a copy thereof shall be served upon the owner or occupant before any entry is made to make such survey. After such service the party obtaining such order may, with the necessary surveyors and assistants, enter the premises specified in such order at any reasonable time and make such survey without being liable to any action therefor except for injury or damages unnecessarily caused thereby.
Wis. Stat. § 840.12