Appointment of valuer in cpc

Under order XXVI Rule 9 CPC:

In any suit in which the Court deems a local investigation to be requisite or proper for the purpose of elucidating any matter in dispute, or of ascertaining the market-value of any property, or the amount of any mesne profits or damages or annual net profits, the Court may issue a commission to such person as it thinks fit directing him to make such investigation and to report thereon to the Court:

What are the facts? What is the context?