Zumbach Electronics India Pvt. Ltd. Manufactures Ultrasonic Based Systems with Wall Thickness Measurement. Zumbach Electronics India Pvt. Ltd. Also manufactures in-line measuring, monitoring and control systems for the wire and cable industry, for plastic extrusion lines and for the metal industry. The Ultrasonic Based Systems with Wall Thickness Measurement, Model Umac ® is used for measuring insulation and jackets on cables, coatings over metal cores, loose tube and thin jackets etc. The Ultrasonic Based Systems with Wall Thickness Measurement has highly developed measuring system interrogating up to 16 sensors at high speed at the heart of each system. This system enables automatic closed-loop control of wall thickness and/or diameter.