Analog Railroad Tester, Basic AC Current Accuracy +/- 3.00 Percent, Resistance Measurement Accuracy Rx1 +/-5 Degrees of Arc, Rx100 +/- 2.5 Degrees of Arc, Rx1000 +/- 2.5 Degrees of Arc, Basic DC Current Accuracy +/- 2.00 Percent, AC Frequency Response 60 Hz, Parameters Measured AC Current, AC Voltage, DC Current, DC Voltage, Resistance, Basic AC Voltage Accuracy +/- 3.00 Percent, Basic DC Voltage Accuracy +/- 2.00 Percent, Minimum AC Voltage Measurement 3 V, Maximum AC Voltage Measurement 600 V