Fitters, who know all the ins and outs of the engine, make the worst drivers.
Boiler-makers, including platers or fitters, caulkers and riveters.
The valves and other fixings are usually attached by the fitters.
One or two of the English fitters, who were Reservists, had rejoined.
And I'd been writing 'fitters' instructions' in the office for three years.