IDEAL 61-773 1000AAC TightSight Clamp Meter with True RMS, Capacitance and Frequency 660 A True RMS clamps for a variety of industrial and commercial environments Unique TightSight bottom display makes hard-to-reach measurements convenient Easy-to-read displays feature large numbers and green glowing backlight CAT IV rating for maximum safety Frequency, capacitance, peak, data hold, max/min