The Fluke 9040 Three-Phase Rotation Indicator is effective for measuring phase rotation in all areas where three-phase supplies are used to feed motors, drives and electrical systems. The 9040 is a rotary field indicator and can provide clear indication of the three-phase via an LCD display, and the phase rotation direction to determine correct connections. It allows rapid determination of phase sequence and has a voltage (up to 700V) and frequency range suitable for commercial and industrial applications. The included test probes have a variable clamping range for safe contact, even in industrial sockets.