Great, Thanks for shareing that meter with us. Good to see that there are more meter collectors out there.
European meters, single phase are usually marked with M and L on the terminals.
In The Netherlands and Germany it is M L M L at the terminals taken fron left to right.
where M is Mains in, L is Load out for the phase.
then,
M for the Neutral in, L for Neutral out.
When taking the cover of it is easy to see that the Neutral connections are a solid link between the M and L terminals.
The current coil is connected between the M and L terminations on the left hand side.
The Britisch standard for 1Ø meters is usually Phase in, Neutral, Neutral, Phase Out.
Quite often the potential link is visible which feeds the potential coil of the meter and can be opened for testing in a large batch of meters via a phantom load.
Meters are built with and without a reverse running stop which prevents the disc from going backwards. It usually comprises of a starwheel and a gravity vane which rides over the cogs with minimal friction to the meter.
