mechanician

noun6

1. •
   (old-fashioned) One skilled in building, using, or repairing machines, or who makes machines or tools.

   • Shortly after being removed to the hospital Wright recovered consciousness and sent for Taylor, his mechanician. -- "Fatal fall of Wright airship", New York Times September 18th 1908
2. •
   (old-fashioned) A machinist.
3. •
   (old-fashioned) A mechanic.
4. •
   (old-fashioned) One skilled in the theory or construction of machines.

   • To build such a device will require an expert mechanician.
5. •
   (old-fashioned) One skilled in mechanics.
6. •
   (old-fashioned) A scientifically trained practitioner.