27-03-2020, 12:45 PM
The original ammeter I took out my Ruby is a very simple device - not much to go wrong - if the pointer is free it has to work? The one I put back in is the same size but has a later plastic case - it ranges from -30 to +30 amps. These seem common enough, as are the older -20 +20 ones - there are always one or two about for sale?