Crompton Parkinson Voltmeter

Model AP1806

serial no.276973

Crompton Parkinson Meter

This is one of a number of instruments given to me by Martin Harrison which belonged to his father who was a a Chartered Electrical Engineer. He collected both old electrical test equipment and due to his name (John Harrison) old clocks. Martin thought his father would have been pleased with his items new home and owner.

I have given it a clean and found to work very well. I checked the meter against one of my digital meters and found it to be accurate. I guess that F.G. indicates that it is a First Grade instrument to the British Standard. The model number AP1806 may indicate that it was made for the Air Ministry. It requires 5mA for full scale deflection.