A drive line for testing a component of a drive train of a vehicle comprises a torque sensor. The tie layer most preferably includes an adhesive-enhancing effective amount of a thermoplastic reactive terpolymer of ethylene-methyl acrylate-glycidyl methacrylate which adhesively bonds the substrate and clear coat layers one to another. The tool has a signal conditioning block for receiving the periodic pulse train signal and generating therefrom a logic-level signal having a frequency. The data memory unit is connected to the central processing unit by a data bus and is provided with cell array blocks having nonvolatile ferroelectric capacitors and stores execution data required for the execution of the instruction information.