Amperevoltommeters '' PR-5 '' and '' PR-5M ''
Instruments for adjusting and controlling the PTA.Amperevoltommeters "PR-5" and "PR-5M" from 1961 and 1963 were produced by the Odessa Economic Council. They are combined multi-range avometers for measuring AC and DC currents and resistance values. In 1963 the device "PR-5" was modified into "PR-5M". Its design has not changed.
