Over the years I have had a succession of gizmos to give me that sort of information. The one I have stuck with, for a couple of years now I think, is “delta xy” - small, never a problem with it, elegant, and free.
Andreas
Over the years I have had a succession of gizmos to give me that sort of information. The one I have stuck with, for a couple of years now I think, is “delta xy” - small, never a problem with it, elegant, and free.
Andreas