Custom Calibration for Multiple Tachometers or gauges

Hi! Would it be possible to implement advanced calibration for multiple tachometers? For example, in my case, I have both the cluster tachometer and a competition tachometer, and if I calibrate one, the other ends up different. I would need an option to select each Arduino that has a tachometer output and calibrate them individually.

Similarly, if there is already an option that allows me to do this and I'm not aware of it, I would love to know! Thanks.