Installs, tests, repairs, adjusts, calibrates and balances all types of pyrometers, temperature recorders, steam, air, water, natural gas and oil flow meters and any other indicating, controlling or graphic electrical or mechanical instruments and the auxiliary equipment controlled by such instruments. Dismantles precision hydraulic and pneumatic equipment, consistent with accepted practices, examines to determine cause of failure or malfunctioning, repairs salvable parts and makes replacements where necessary.