Controlling analog volt-meter display
It should be possible to convert that meter to a more usable voltage range.

Generally, analog meters use a movement that is somewhere in the range of 100 uA to 1 mA full scale.

In other words, inside the meter is a resistor divider that scales the meter range to 30V, so that when 30V is applied to the terminals, there is 100 uA/1 mA of current flowing through the actual meter coil.

The meter you link to has two screws holding the terminals on the back of the meter on. It is quite likely that you can simply unscrew the back of the meter, and remove/change the scaling resistor divider.



The one exception to the 100 uA/1 mA meter rule is for direct-reading current meters, particularly for AC. Analog current meters in &lt; 10 - 25 A range that do not specify they require an external shunt may not be possible to convert, as they use a different mechanism,