Precision-instrument makers and repairers

Duties and tasks

• Repairing, cleaning, and adjusting mechanisms of timing instruments, such as watches and clocks
• Adjusting timing regulators, using calipers, watch-rate recorders and tweezers
• Cleaning, rinsing, and drying timepiece parts, using solutions and ultrasonic or mechanical watch-cleaning machines
• Testing timepiece accuracy and performance, using meters and other electronic instruments
• Testing accuracy of meters, gauges, indicators, or other recording or controlling instruments to locate defective components and for conformity with standards
• Calibrating instruments or scales, using hand tools, computer, or electronic devices
• Inspecting components, connections, and drive mechanisms to detect defects
• Assembling instruments and devices, such as barometers, control valves, gyroscopes, hygrometers, speedometers, tachometers, and thermostats
• Testing, calibrating and adjusting electronic, mercurial, aneroid and other types of meteorological instruments for compliance with printed specifications and schematic diagrams, using voltmeters, oscilloscopes, tube testers and other test instruments
• Adjusting and repairing masts, supporting structures, clearance lights, control panels, control cabling and wiring, and other electrical and mechanical devices
• Repairing and setting optical instruments such as microscopes, telescopes, theodolities and sextants
• Checking whether assembled units conform to specifications and ensuring stipulated performance and sensitivity by standard tests