When you put in trim with this switch, there is a wheel, about 18 inches across, right next to the pilot that starts to turn. As long as you give input, the whe

When you put in trim with this switch, there is a wheel, about 18 inches across, right next to the pilot that starts to turn. As long as you give input, the wheel turns. It is not quiet. It is a mechanical device. Push trim for a 1/2 second, the wheel turns a bit. Autopilot puts in trim, the wheel turns. MCAS puts in trim, the wheel turns. This is a very obvious and continuous source of information to the pilot that the stab trim is changing.