A Hall effect helicopter mast torque meter includes a stand pipe, a first
magnet, a second magnet, and a sensor. The stand pipe is connected to the
top of the mast such that the stand pipe rotates at the same velocity as
the mast. The first magnet is operably associated with the stand pipe
which is operably associated with the top of the mast. The second magnet
is operably associated with the bottom of the mast. The sensor detects
the magnetic field of the first magnet and the second magnet.