While cleaning out my dad's workshop we found this old meter.
I think it is a Watt meter but I can't find anything about it on the Internet. Maybe someone out there can tell me what it is, how it work and how and why was it used.
Looks like a Watt meter. It has big resistors in it and measures the the current through them to show you the watts. I used to know these things but of late I loose the memory.
Or is it voltage across the resistors. Oh well either way it's a very cool Watt meter.
André, I googled the German name and found this:
Dr. Siegfried Guggenheimer AG
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Metrophot light meter
image by Anssi Puisto (Image rights)
A company founded in 1906 by Siegfried Guggenheimer (1875-1938) in Nuremberg, Germany. It manufactured electronic measuring devices. June 1933 the company released a selenium light meter called Metrophot.
Because Guggenheimer was a Jewish name, the German government ordered in the end of 1933 that the name must be changed. Metrawatt AG was chosen to be the new name.
When I googled "AEVD Brussels," I found this in a LinkedIn entry:
"Previous: AEVD (n'existe plus) et à Léopoldville chez Pétrocongo"