Apparatus for independently measuring mutually perpendicular forces and torque about the line of action of one said force. A set of four cantilevered beams extends along a pair of X-Y coordinate axes and supports a rigid platform in the X-Y plane. A force receiving means above said X-Y plane and on the Z-axis intersecting the origin of said X-Y axes, is rigidly coupled to said platform, whereby forces applied thereto produce bending in said beams in accordance with the direction of the force. Strain gauge means and bridge circuit means are arranged to detect only strains in said beams resulting from the force desired to be measured.