very often, multiple stator/rotor sections are arranged behind one another on the same axis, allowing for several tuned circuits to be adjusted using the same control, e.g. a preselector, an input filter and the corresponding oscillator in a receiver circuit. the sections can have identical or different nominal capacitances, e.g. 2 × 330 pf for am filter and oscillator, plus 3 × 45 pf for two filters and an oscillator in the fm section of the same receiver. capacitors with multiple sections often include trimmer capacitors in parallel to the variable sections, used to adjust all tuned circuits to the same frequency.