Delta calibration setting for Klipper

A correct enhanced Delta calibration for Klipper is very complex if you don't use a fixed base for the caliper.
A fixed base where to place the rod of the caliper is necessary because in this way you are sure that the measurement always takes place in the same point and the caliper never changes inclination during the measurement.
To make the measurement correctly, it is absolutely necessary to file very carefully the joint cords between one layer and the other and every face of the hexagonal parallelepipeds of 'Wheel delta calibration', otherwise the thickness of the joint cord and every imperfection on the face increases the real size of the print (and so the piece "DELTA_DIMA_MISURE" to be sure and test the misure of a final piece).
You must file too every imperfection of the wheel and supports.
It is also necessary to have a caliper that does not change the measure according to the pressure applied to the piece.
Be very careful: the "Wheel delta calibration" file that I create