As a metrologist, your duties focus on the calibration of equipment. You develop and test methods for calibrating devices and ensuring accurate measurements in scientific, laboratory, or technical settings. As a metrologist, you may also develop, test, or audit methods for performing maintenance of measurement instrumentation. You use statistics, math, physics, or laboratory sciences to analyze current measurement procedures and recommend changes or improvements. In some jobs, you may document calibration standards to ensure your employer or client complies with regulations.