A professional who assembles and adjusts typewriters and office machine assemblies and subassemblies, using blueprints, gauges, handtools, and holding devices. Responsibilities include:

• Screws and bolts parts together, using screwdrivers, wrenches, and other handtools.
• Tests operation of machines and typewriters to detect loose and binding parts and to determine synchronisation of related parts.
• Bends and taps parts into alignment, using pliers and mallets.
• Turns compensating screws to set parts at specified tensions and clearances.
• Verifies tensions and clearances of parts, using tension scales and space and feeler gauges.
• May ream and tap holes and file and fit carriages and covers of equipment, using hand reamer, tap, and file.