AEMC 500 Clamp-On MeterClamp On Meter Model 500 The Clamp on Meter Model 500 is a general purpose professional clamp on. A strong mechanical case design, quality materials, full ranges and compliance to international safety and quality standards ensure a professional and reliable tool. The Model 500 is auto ranging, and provides the user with AC Volts, AC Amperes, resistance, and continuity. The large and complete 4000 count LCD features comprehensive user interface symbols