Introduction: MF47 type is a kind of pointer multi-meter with multi-function, multi-usage, high-sensibility and multi-protection. This product has better mechanism strength and isolation strength, characterized with flat and thin outlook, light weight and easy-taking, becoming suitable and ideal for electrical technical area, communication area and electrical institutions. Except measurement of parameters of AC voltage, DC voltage, DC current, resistance, temperature, the instrument can also detect transistor DC magnification. While taking advantage of fundamental frequency power supply in series to measure parameters of electrical capacity and electrical sensibility and also detect the audio level.