Electrotechnical Articles-Namely, Electromagnetic Valves, Contacts, Electric Measurement, Regulating and Control Apparatus-Namely, Contact Pressure Gauges, Contact Thermometers, Level Indicating and Switching Apparatus, Electrical Pressure Switch Apparatus, Pneumatic Measuring, Regulating and Control Apparatus-Namely, Pressure Gauges, Thermometers with Pneumatic Transmission; High Pressure, Low Pressure (Vacuum), Differential Pressureswitching and Measuring Apparatus