How frequently should a pneumofathometer gauge be tested or calibrated?

A pneumofathometer gauge, which is crucial for measuring underwater pressure and providing depth readings, should be tested or calibrated every year to ensure its accuracy and reliability. This annual calibration is essential because the precision of depth measurements can significantly impact safely conducting dives and ensuring the safety of divers. Calibration checks help identify any drift in measurements that may arise from wear and tear or environmental factors, allowing for timely corrections that uphold safety standards in diving operations. Regular annual checks help maintain the instrument's performance within acceptable limits, mitigating risks associated with inaccurate depth readings during diving activities.