%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example D-5-5 on page .
%% 
%%  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{ttctexaplate}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{413.44133pt}
\StartShownPreambleCommands
\usepackage{pstricks,multido}
\SpecialCoor
\input random
\newcommand\manometre{%
  \pscircle[doubleline=true,fillstyle=solid](0,0){1}
  \psarc(0,0){0.65}{-60}{240}
  \multido{\i=-60+30}{11}{\psline(0.65;\i)(0.45;\i)}
  \psline[arrowscale=2,linewidth=2\pslinewidth]{->}(0.5;-70)(0.65;110)
  \pscircle[fillstyle=solid]{0.1}%
}
% idea by Denis Girou and Manuel Luque
\newlength\Xd
\newlength\Yd
\newcommand\RandomMolecule[1]{%
 \multido{\i=1+1}{#1}{%
   \setrandim\Xd{-2pt}{1pt}%
   \setrandim\Yd{-1pt}{1pt}%
   \pscircle*[linecolor=blue](\pointless\Xd,\pointless\Yd){1pt}}%
}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-7,-1.2)(5,1.2)%\psgrid
  \psclip{\psframe(-2,-1)(0.8,1)}
    \RandomMolecule{400}%
  \endpsclip
  \pscircle[doubleline=true,fillcolor=magenta,fillstyle=solid](-6.5,0){0.6}
  \psframe[fillstyle=solid,fillcolor=lightgray](-6,-0.5)(-2,0.5)
  \psline[doubleline=true,doublesep=2mm](1,0)(3.1,0)
  \psframe(-4,1)(0.8,-1)
  \psline(0.8,1)(1,0.1)(1,-0.1)(0.8,-1)
  \psframe[fillstyle=solid](-4.1,-1.2)(-4,1.2)
  \psline[linewidth=2mm](-2,-1)(-2,1)
  \multido{\n=-3.5+0.5}{9}{\psline(\n,1)(\n,0.7)}
  \rput{-90}(4,0){\manometre}
\end{pspicture}
\end{document}
