Profile: Watthour Engineering Co., Inc. is a manufacturer of meter testing equipments. Our model 2150 automated test system is a fully ANSI compliant testboard that uses a single voltage and three independently controlled isolated current sources to test all electromechanical and solid state meters up to 50 Amps. Our model 3230 features built-in laser optics, smart socket technology and automatic meter form selection. Our model 5100 demand test system is a multi-position testboard designed to verify the proper operation and registration of mechanical, thermal, and electronic demand registers.