Thumb points in the direction of the current (conventional current, from posite to negative). Your fingers represent the lines of the magnetic field, and the force is perpendicular to the palm (i.e. where the palm faces is where the force is acting...like a palm facing down would mean a force is acting down).
Ok thanks, I was just confused because our teacher didn't teach us the right hand palm rule, instead he taught us some other one, and its just confusing. All I needed to know was that you measure it at both sides of the motor.
Ta