Who made the one that you now have? You may not find the original, your girl is 14 years old. Over the years I have replaced 2 of them. And neither looks like the original. You may have to settle for one that just looks nice. Cecil is a good start.
Thanks for the suggestion. I don't know who made the original gauge. The problem is that the trim gauge is "square" and all the ones I have seen are "circles".