A rule of measurement is a set of rules that allows the filtering of components and the definition of operations needed for their association with items and their correct measurement. Since it is obviously related to cost databases, it supports a similar work section structure.

Under "Rules of measurement", the "Add" button allows detailed sets of rules to be created. A name for the new rule to be created and a work section structure to organise them must be specified (it is also possible to select "Empty").