Millwrights work to specifications requiring tolerances to a thousandth of an inch. Millwrights work primarily in metal with machinery and equipment requiring precision. Millwrights install conveyor systems, escalators, electric turbines and generators. Millwrights install and maintain machinery in factories and perform precision work in nuclear power plants. Millwrights are skilled construction mechanics who study and interpret blueprints and then use their knowledge and expertise to help keep the industrial sector in working order.