Manual mesh levelling with an offset dial gauge

Hi,

I'm new to mesh levelling and I'm not yet aware of the automated methods so before I go further down into the code, can I ask whether my wish is already in the code?

I have set up 3x3 grid for manual mesh levelling.

However my dial gauge is offset 40mm from the nozzle - which I imagine is little different from automated methods.

I would like to set the first point of the mesh grid with paper, then move the dial gauge to the same point and record the Z distance, and then subsequent mesh points would position the gauge instead of the nozzle but, of course, record the X/Y of the mesh point rather than the nozzle position.

Is this already in the code?

Thanks,