A method of evening a sliver produced by a carding machine in which a predetermined output rate and draft are set. The method includes the steps of determining the actual weight of a predetermined sliver length by weighing; determining the difference between the actual sliver weight and a desired sliver weight; as a function of the difference altering the draft corresponding to a predetermined sliver thickness; measuring momentary actual thicknesses of the running sliver at a card output for a determined time period or sliver length and generating mechanical signals representing the momentary actual sliver thicknesses; converting the mechanical signals to first electric signals; combining the first electric signals into a second electric signal constituting an average of the first electric signals and representing the actual sliver thickness of the measured sliver; storing the second electric signal; applying the second electric signal to a computer; applying to the computer a third electric signal representing the actual sliver weight; and determining, with the computer and from a function between the actual sliver weight and the actual sliver thickness, a desired sliver thickness corresponding to a desired sliver weight.