An Instrument Technician installs, calibrates, maintains, and repairs industrial measuring and control devices (like sensors, transmitters, PLCs, and SCADA systems) to ensure accurate operations in manufacturing, energy, or other sectors, troubleshooting issues, performing preventive maintenance, working with engineers, and documenting all work. Key duties involve using test equipment (HART, Fluke), reading manuals, ensuring safety, and sometimes training others, requiring skills in electronics, mechanics, problem-solving, and attention to detail.