An under bed scale which is comprised of a support frame, a load frame mounted on the support frame for receiving a load and for moving vertically relative to the support frame upon receiving the load, a pair of beam arms connected to the load frame to pivot about a respective horizontal axis in response to movement of the load frame, springs mounted on the support frame and secured to each beam arm to proportionally restrain movement of the beam arm relative to the support frame and a pair of means mounted on the support frame for emitting a signal corresponding to the displacement of each respective beam arm relative to the support frame.