Meter readings (mA,V)

[gregfox151@gmail.com]

Hi,
I have a panel meter that reads in volts, from 00.01 up to 30 volts.
I also have a circuit I want to connect it to, that puts out 0-199 mV.
When I connect to the circuit and try to read say, 140mV, my meter reads 00.01.
Is there any way (other the easy way out, of simply getting a meter that reads in mV) for me to be able to read the 140 mV more precisely?
I thought of an H bridge or something along those lines, but ahhh, the must be an easier way.
Any thoughts appreciated.

[Simon]

you need to find out how to alter the meters settings, or it has one scale only and your stuffed

[toster]

wouldn't an op-amp do?

[gregfox151@gmail.com]

op amp? how would you use it?

[Simon]

not really as the meter reads on a certain scale, amplifying the value will just  mean that the scale will be all out and you've changes the meter, say he does a x10 on it that means it now only good to 3V and misreads everything

[qno]

usually these meters have a full scale of 320 mV or 400 mV.
With a voltage divider and a variable decimal point you can expand the range.

Check for a part of type number.
Google for data. Usually the manufacturer wants to sell as much as possible by showing how easy it is to use the part in the datasheet.

You have to change the input voltage divider and change the position of the decimal point.