Abstract: By providing steps on the inner form of the winding support used for the winding of saddle-type coils, the turns of the saddle-type coil are exactly fixed in their positions. In this way the tolerances of the magnetic field produced with the aid of such coils become small, with this improving the suitability of the coils for use with self-convergent deflection systems. The manufacture of the saddle-type coils with the aid of the winding support according to the present invention is more inexpensive than the manufacture of saddle-type coils wound onto grooved coilformers, and more exact than if stepless inner forms were to be used.