Vintage Soviet USSR Prefix For Determining Parameters Of Semiconductors P4340. Designed to measure the parameters of bipolar transistors of the pnp and npn type in a circuit with a common emitter, unipolar (field-effect) transistors with p and n-channel in a circuit with a common source and other semiconductor devices with pn junctions when used as a reading device of any electrical measuring device that has limits of measurement of direct current and voltage. It was made to be be used with AC and DC capable analog voltmeters that can measure volts and amps. Untested. Dimensions: 166?90?42mm Weight 0,4 kg. Will be shipped by Air Mail International priority mail. Thanks for looking... I will ship to worldwide.