I had a selection of these lovely old 1950's meters so I turned all of them into 4 digit Nixie Clocks. Carefully restored, and as many original bits and bobs kept - these were used in the late 1950's at laboratories and scientific research establishements for their accuracy. I had a limited number of these, only 4 or 5 and they are either in Milliamperes or Volts.
The Meters have a lovely mahogany dovetailed casing, and an original leather handle. A great clock for the man cave or to go into your study, each one individually hand made and put together. Now all sold but similar meters in the Starting Points section of the website.