Thanks for coming back so quickly, The Data Explorer view is close and might do the trick.
On your normal gauge the colour is starting at -15 (the gauge minimum) and not at zero.
Here are a couple of examples (I’ve edited your 6.73 gauge) to show what I am trying to achieve.
The bar also centres on zero and extends left and right from the zero (clumsy excel chart)
I’m hoping that there is a setting that I’ve missed…