The core activity of Caligyr AG is the provision of calibration and quality assurance services for measuring instruments, particularly in the field of energy distribution. This includes, among other things: Calibration of measuring instruments to ensure their accuracy and legal compliance; Conducting acceptance tests to verify the quality of measuring instruments before commissioning; Statistical testing and inspection of measuring instruments to ensure their accuracy and reliability; Quality assurance services, such as conducting batch tests and managing tests in statistical testing procedures. The company offers these services primarily to energy suppliers, network operators, and industrial companies to ensure that measuring instruments are accurate and legally compliant, and that energy billing is correct.