A professional who performs any combination of following tasks to recondition displacement-type gas metres and governors. Responsibilities include:

• Cleans metre case, using wire brush or scraper, and places metre in grit-blast chamber to remove paint and soil.
• Removes top, front, and back case panels and valve compartment panels, using soldering iron or gas-fired chamber.
• Removes internal parts, including valve covers, valve connecting arms, and recording mechanisms, using soldering iron and handtools.
• Cleans internal compartments and moving parts, using rags and cleaning compound.
• Repairs internal partition seams, using soldering iron.
• Replaces stuffing box, using handtools, and lubricates moving parts, using oil gun.
• Attaches airhose to metre inlet, plugs outlet, and observes gauges for loss of pressure to test internal seams for leaks.
• Solders top, front, and back case panels in place, using soldering iron.
• Connects metre to water chamber fixture to submerge metre in water and observes metre to detect leaks.
• Marks seams to identify leaks, using chalk.
• Caps inlet and outlet of metre to prevent paint from entering system and places metre on conveyor of electrostatic spray booth.
• Turns spray booth controls to paint meter.
• Places painted metre in shipping container.