GEC Voltmeter 150/300 Volt AC/DC moving iron voltmeter housed in wooden box with hinged lid. General Electric Company Ltd, UK, date unknown.
This is one of many instruments collected by Jack Davidson C Eng FIEE which I have been given by Dr Graham Winbolt
Interior of the instrument
Both wire-wound resistors were open circuit when I received this meter and the aluminium panel had corroded due to water damage. New resistors have been fitted and the front panel repainted. [Meter movement 228 mA 1253 ohms] resistor values 6580 and 5325 ohms