Analog Dual Meter, Ammeter & Voltmeter. Strong plastic construction. Very easy to use, just by sliding the plate you can use it as a Voltmeter or Ammeter and this also acts as a security features so that it can be used only as one kind, as the switch also covers the terminals. Voltage range: 0-100mv-1v-10v-50v, Ampere range: 0-100Âµ A-100mA-1A-5A. Approx. Dimensions: 6.38"(16.3cm) x 4.5"(11cm) x 1"(2.5cm).