The Sylvania Polymeter Type 302 is intended for use by the serviceman, engineer, and maintenance man to make measurements of DC, RMS, Peak to Peak voltage, current, and resistance in radio, TV, and industrial, as well as laboratory applications. It is a rugged, versatile, and accurate instrument, which combines the functions of many instruments in one. Voltage readings can be made up to 1,000 volts AC or DC and 2800V Peak to Peak on this instrument, and the DC range can be extended to 10,000 volts by using the Sylvania Voltage Multiplier Probe Type 223 and to 30,000 volts by using the Sylvania Voltage Multipher Probe Type 225.