As an Amazon Associate Conductscience Inc earns revenue from qualifying purchases Multimeters: Introduction Multimeters or multitesters are versatile electrical tools utilized by engineers and electronic technicians to test and troubleshoot household wiring, batteries, electric motors, power supplies, HVAC systems, and other equipment. Note that multimeters act as ammeters, voltmeters, and ohmmeters with high resolution of milliunits; therefore, they are also