A professional who cleans and repairs fare registers used in rapid-transit railway stations. Responsibilities include:

• Disassembles register, using pliers, screwdrivers, punch, and hammer.
• Cleans register case with soap and water and working parts with kerosene.
• Replaces defective parts, makes necessary adjustments, and repaints dial markings, using brush.
• Reassembles register, oils mechanism, and shellacs or paints outside of case, using brush and spray gun.