Gardner Bender GCM-500 Analog Clamp On Electrical MultimeterGardner Bender manual style meter tests AC Current, AC Voltage, DC Voltage, Resistance and Continuity. Includes test leads and operating instructions. Durable case with a 3 ft. drop rating, 150 lb crush rating. Easy to read display Lockjaw feature prevents misuse jaws only open when dial is set to Amp s Measure current Measure voltage Measure current drawn by appliances Measurement lock features holds indicator in place Uses only one AA battery Uses