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This is a Weston model 633 analog clamp-on meter which measures AC current and AC voltage in several ranges: 0-10, 25, 100, 250 and 1000 amps and 0-150, 300 and 600 volts. This unit is guaranteed to work, but it has not been calibrated in some time. This is a nice heavy unit, well made and rugged, and the meter movement seems good. All ranges seem to be working appropriately. As always, you may call us at 916-631-8353 for free consultation on this or any other instrumentation questions you may have. |