A calibration service is a service with which any deviations and inaccuracies of measuring instruments and dimensional standards (or parts of a measuring instrument) are detected. The calibration determines any data that deviate from the "normal". The tolerances of the measuring instrument or measuring means are first adjusted to normal values. Then, the calibration can begin. Normally, the following sequence for the calibration service is provided: first, the measurement process is described, secondly, the management conditions are detected, thirdly, the required standards are calculated, and fourthly, the mathematical concept are considered, followed by the collecting and recording the results.

All measurements and calibrations are carried out in a calibration laboratory. The calibration laboratory manages, procures and repairs the instruments. In addition, most calibration services include a pickup and delivery service. Additional service programs include quick calibrations and weekend service. Depending on the complexity of the calibration, the dimensional standards can be calibrated directly at the customer’s address. Some calibration services also offer measuring equipment rental services or advice for the procurement of new equipment.