antique Voltmeter/Ammeter

[jpb]

As I'm in the process of moving house (I hope) I've been clearing out my loft and came across this very early voltmeter/ammeter.

I inherited as a child from some distant relative (he also had a very nice army hat in a special tin box which my brother got - the sort they wore in the 19th century).

I thought perhaps a couple of photos might be of interest.