Abstract: A portable torque verification system for testing the accuracy of hydraulic, pneumatic, electrical, and manual torque wrenches. A first torque sensor is utilized for hydraulic, pneumatic, and electrical torque wrenches. A preferred second torque sensor measures the torque of manual torque wrenches. The second torque sensor is preferably supported by a support the height of which is preferably adjustable. Hydraulic connections to an external source of hydraulic fluid are provided so that the housing preferred for the components of the system may be closed for safety when an hydraulic wrench is tested. Electrical connections permit the use of an external torque meter. Within the housing the system additionally includes a reaction point, preferably removable and slidable, and a hydraulic pressure gauge. Also preferably, a rigid base plate is attached to the bottom of the housing and holds, inter alia, the first torque sensor, the support cylinder, and the reaction point.