I've got a fold up/slim voltmeter in my glovebox. I think it's something pretty much every 928 driver should have in there - along with the flashlight, of course. If we could get one with the 928OC brand, that would be cool. It closes up into a little card case about the same size a calculator. It's this one, actually:
This image is hidden for guests.
Please log in or register to see it.
Not sure what it would take to get this logo'd... but I'll bet you'd get some takers.