Abstract: Selecting device for the individual selection of the operating means in knitting machines, particularly in large diameter circular knitting machines with rotating needle beds and an electronic selection mechanism. Said device includes at least one selecting magnet which is fixed with respect to the cam system, and selectors slidable in grooves of a needle bed, said selectors having at least an elastic central part, the lower part of the selector being located within the active range of the selecting magnet, the upper end surface of the selector being inclined towards the cylinder cam box. A slider is swingably arranged about a joint in its upper part inside a groove of the needle bed above each selector, the lower part of said slider being provided with a recess selectively receiving the upper part of the selector.