%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 5-11-6 on page 269.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.83385pt}
\StartShownPreambleCommands
\usepackage{pstricks}
\def\myCoil{\pscurve(-0.5,0.5)(-0.1,0.45)(0.3,0)%
     (0,-0.5)(-0.3,0)(0.1,0.45)(0.5,0.5)}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(2,0.5)
  \psset{unit=0.5,linewidth=1.5pt}
  \multips(0,0)(1,0){4}{\myCoil}
\end{pspicture}
\end{document}