wvmarle:
Instead of stepper motors, use servos. Less power use (no power used to hold position unless force applied), no need to look for "home" position (absolute positioning). Normal steppers can move 180°, which should be enough for most gauges.
If you look at the link the OP provided, it is to steppers specifically designed for automotive gauges.
There is even a Library for them and you can run them directly from the Arduino output.
They are open or air cored steppers.
When you power up, you make them reverse back against a stop to find home position.
I have 6 to play with, just haven't had the time.
Tom... 