Systems and methods provide for display of a deficiency indicator in response detection of a defined deficiency in an electric signal in an insulated wire. Measurement systems may include a housing sized and shaped to be held in a hand, a set of sensors for sensing a set of electrical characteristics of the electric signal, one or more processors, and a display provided on a surface of the housing. The measurement system may obtain measurements from the set of sensors and detect a presence of the defined deficiency based on the set of measurements. In response to detecting the presence of the defined deficiency, the measurement system may display a deficiency indicator that is representative of the defined deficiency detected.