Perform precision assembling, adjusting, or calibrating, within narrow tolerances, of timing devices such as digital clocks or timing devices with electrical or electronic components.
<ul><li>Assemble and install components of timepieces to complete mechanisms, using watchmakers' tools and loupes.</li><li>Observe operation of timepiece parts and subassemblies to determine accuracy of movement, and to diagnose causes of defects.</li><li>Test operation and fit of timepiece parts and subassemblies, using electronic testing equipment, tweezers, watchmakers' tools, and loupes.</li><li>Replace specified parts to repair malfunctioning timepieces, using watchmakers' tools, loupes, and holding fixtures.</li><li>Disassemble timepieces such as watches, clocks, and chronometers so that repairs can be made.</li><li>Clean and lubricate timepiece parts and assemblies, using solvents, buff sticks, and oil.</li><li>Examine components of timepieces such as watches, clocks, or chronometers for defects, using loupes or microscopes.</li><li>Bend parts, such as hairsprings, pallets, barrel covers, and bridges, to correct deficiencies in truing or endshake, using tweezers.</li></ul>