B+K Precision offers a wide variety of current clamps for safe non-invasive current measurement. Measure up to 2000A with these reliable, rugged instruments. All of B+K Precision clamps are much more than a current clamp offering the ability to measure, voltage resistance, capacitance and even frequency. Additionally, special features allow for the recording of minimum and maximum values, peak values, test diodes and for continuity. The 330B allows for non invasive current measurements. It measures AC current up to 1000A, AC voltage to 750V, DC voltage to 1000V and resistance to 2000M ohms.