Analog Railroad Tester, Basic AC Current Accuracy +/-1.50 Percent, Resistance Measurement Accuracy +/-2.00 Percent, Basic DC Current Accuracy +/-1.50 Percent, AC Frequency Response 25 to 400 Hz, Parameters Measured AC Current, AC Voltage, DC Current, DC Voltage, Resistance, Basic AC Voltage Accuracy +/-3.00 Percent, Basic DC Voltage Accuracy +/-1.50 Percent, Minimum AC Voltage Measurement 1.5 V, Maximum AC Voltage Measurement 600 V, Minimum DC Voltage Measurement 0.6 V