Been working on some ideas, one being stacked gauges, the other is using two "sweeps" inside a gauge.  The top gauge face shows what it would look like with each gauge at the max limit.  Can't decide if I like this look or not.  I'm still learning graphics design and this is a slow process for me. So, soliciting thoughts before I keep at this one. 
 
	
 
	 
 
	Couldn't make the one above work for me, so I went a somewhat different direction