Abstract: The Short Chaser is a diagnostic tool for use by electricians in locating and clearing short circuits in building wiring systems. Its value to the tradesman lies in its ability to audibly indicate the clearing of the short at the moment that the corrective action is taken, thereby pinpointing where the problem was. This enables one man working by himself to handle trouble calls involving shorted branch circuit wiring, for the Short Chaser watches the circuit and sounds off when the right move is made. Because of its design, it is suitable for use on circuits sustaining shorts across circuit conductors or shorts from hot to ground. Therefore, the nature of the short is not pertinent to the successful operation of the device.