A.C. VOLTMETERS, D.C. VOLTMETERS, A.C. MILLIAMMETERS, D.C. MILLIAMMETERS, A.C. AMMETERS, D.C. AMMETERS, D.C. AMMETERS, VOLT-OHMMETERS, RESISTANCE METERS, BATTERY TESTERS, HEARING-AIR TESTERS, FENCE METERS FOR MEASURING THE VOLTAGE OR CHARGE OF AN ELECTRIC FENCE