A more thorough explanation:

bilanciis deferendis

Bilanciis deferendis was a legal order given to a company to transport weights to a specific location to weigh wool that was allowed to be transported.

During the medieval period, wool was a valuable commodity and was heavily taxed. To ensure that the correct amount of wool was being transported, the government would issue a bilanciis deferendis to a company. For example, if a company wanted to transport wool from London to York, they would be required to carry weights with them to weigh the wool at a specific location. This was to prevent any fraud or underpayment of taxes.

Another example of bilanciis deferendis being used was during the reign of King Edward III. He issued a writ to the mayor and sheriffs of London, ordering them to ensure that all wool being transported from the city was weighed using the correct weights.

These examples illustrate how bilanciis deferendis was used to regulate the transportation of wool and ensure that the correct amount of taxes were paid.