Partial measures allow managers to focus on the use of a particular input. Operating partial measures have the advantage of being easily interpreted by all within the organization and are therefore easy to use for assessing the productivity performance of operating personnel. Laborers, for instance, can relate to units produced per hour or units produced per hour or units produced per pound of material. Thus, partial operational measures provide feedback that operating personnel can relate to and understand - measures that deal with the specific inputs over which they have control. This increases the likelihood that they will be accepted by operating personnel. Furthermore, for operational control, the standards for performance are often very short term. For example, standards can be the productivity ratios of prior batches of goods. Using this standard, productivity trends within the year can be tracked.