A vintage DC voltage and current meter. Most early electricity measuring instruments were developed for a single purpose – separate ones for voltage, current and resistance. This instrument, manufactured in the mid-1940s by Ernest Turner Electrical Instruments Inc., used internal shunts and allowed both DC voltage (0-5 V or 0-50 V) or DC current (0-50 mA or 0-500 mA) to be measured with the same compact device by attaching the test leads to different input posts. The meter, contained in a metal box, measures about 9 cm in both height and width and is about 5 cm deep. The Turner Company, located in High Wycombe, Bucks. England, manufactured a wide range of electrical equipment. It is not known where at the CRNL site this meter was used.
