\documentclass[a4paper,12pt]{article}
\usepackage{pst-circ}
\begin{document}
\section*{Potentiometer tripole}

\psset{griddots=5,gridlabels=7pt,subgriddiv=0}
\begin{pspicture}(3,3)
  \psgrid
  \pnode(0,1){A}
  \pnode(3,1){B}
  \pnode(3,2){C}
  \potentiometer[labeloffset=0pt](A)(B)(C){P}
\end{pspicture}
\hfill
\begin{pspicture}(3,3)
  \psgrid
  \pnode(0,2.5){A}
  \pnode(3,2.5){B}
  \pnode(0,1){C}
  \potentiometer[labeloffset=0pt](A)(B)(C){P}
\end{pspicture}
\hfill
\begin{pspicture}(3,3)
  \psgrid
  \pnode(0,0){A}
  \pnode(3,2){B}
  \pnode(2.5,3){C}
  \potentiometer[labeloffset=0pt,labelangle=:U](A)(B)(C){P}
\end{pspicture}

\vspace{1cm}
\begin{pspicture}(3,3)
  \psgrid
  \pnode(1,0){A}
  \pnode(1,3){B}
  \pnode(2.5,0){C}
  \potentiometer[labeloffset=0pt](A)(B)(C){P}
\end{pspicture}
\hfill
\begin{pspicture}(3,3)
  \psgrid
  \pnode(0,3){A}
  \pnode(3,0){B}
  \pnode(2,0){C}
  \potentiometer[labeloffset=0pt,labelangle=:U](A)(B)(C){P}
\end{pspicture}
\hfill
\begin{pspicture}(3,3)
  \psgrid
  \pnode(0,2){A}
  \pnode(3,2){B}
  \pnode(1.5,0){C}
  \potentiometer[labeloffset=0pt](A)(B)(C){P}
\end{pspicture}


\vspace{1cm}
\begin{pspicture}(3,3)
  \psgrid
  \pnode(1,0){A}
  \pnode(1,3){B}
  \pnode(2.5,0){C}
  \potentiometer[dipolestyle=zigzag](A)(B)(C){P}
\end{pspicture}
\hfill
\begin{pspicture}(3,3)
  \psgrid
  \pnode(0,3){A}
  \pnode(3,0){B}
  \pnode(2,0){C}
  \potentiometer[dipolestyle=zigzag,labelangle=:U](A)(B)(C){P}
\end{pspicture}
\hfill
\begin{pspicture}(3,3)
  \psgrid
  \pnode(0,2){A}
  \pnode(3,2){B}
  \pnode(1.5,0){C}
  \potentiometer[dipolestyle=zigzag](A)(B)(C){P}
\end{pspicture}
\end{document}
