YXQ 0-300mA Analog Current Panel 85C1-mA Amp Ammeter Gauge Meter 2.5 Accuracy for Auto Circuit Measurement Tester <BR><BR>Conditions of use: humidity 20-50 ° C (relative humidity <90%) <BR>Withstand voltage: can withstand positive arc waveform AC 50Hz, 2KV one minute test <br><br>Measures current tool with accuracy of Class 2.5 ,Clear and easy to read scale and a button for fine tuning the dial