Avometer Analog is a tool for measuring current, voltage and electrical resistance. AVO meter is an abbreviation of Ampere Volt Ohm meter. There are two types namely AVO AVO meter analog meter (zoom in the form of needle roll) and digital AVO meter (zoom in the form of a digital display). Some people call AVO meter with multi-tester. Analog Avometer important to also calibrate AVO meter before being used to make the measurements, especially in measuring the resistance (resistor) so that accurate measurement results. The trick connect the two wires AVO meters then turn penepat zero (calibrator) until the needle right shows the number 0 ohms, then ready for use. If the scale of measurement was changed usually must be calibrated again.