Digital gauges are a stupid idea any way, in particular auxiliary gauges.
The benefit of the old style analogue style gauges is the you can scan them all with a quick glance. You don't have to figure out if the numerical value indicated on each gauge is a good or bad thing, you just check that the needles are in vaguely in about the right place. You should quickly notice if one is in or approaching the red zone, then you can worry about the indicated numerical value.
"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"