1. A TORQUE SENSING DEVICE FOR A ROTATABLE SHAFT COMPRISING: A BASE MEMBER HAVING MEANS THEREON AND ADAPTED TO BE RIGIDLY ATTACHED TO THE ROTATABLE SHAFT FOR ROTATION THEREWITH, A PLURALITY OF LONGITUDINALLY SPACED APERTURES FORMED IN SAID MEMBER, A LEVER ARM HAVING A PLURALITY OF HOLES INTERMEDIATE THE ENDS THEREOF IN REGISTRATION WITH SAID APERTURES AND INCLUDING MEANS PASSING THROUGH ONE SET OF ALIGNED APERTURES TO PIVOTALLY CONNECT SAID ARM TO SAID MEMBER, MEANS FORMED AT ONE END OF SAID LEVER ARM FOR RECEIVING A LOAD, A SPRING MEMBER SECURED TO SAID BASE HAVING MEANS ASSOCIATED THEREWITH FOR ADJUSTING THE FORCE OF SAID SPRING MEMBER AND POSITIONED FOR ENGAGEMENT BY THE OTHER END OF SAID LEVER ARM, AND SENSING MEANS ADJACENT SAID LEVER ARM; WHEREBY WHEN THE LOAD EXCEEDS THE FORCE OF SAID SPRING SAID SENSING MEANS WILL BE ACTUATED.