\documentclass[12pt]{article}
% \newcommand{\lastedit}{2002-09-12 00:00:55 by stolfi}

\advance\topmargin by -13.5mm
\advance\leftmargin by 3.5mm

\begin{document}
\thispagestyle{empty}

\begin{center}
\newsavebox{\xoss}

\setlength{\unitlength}{1mm}
\begin{picture}(230,180)(20,40)
  % Cross object
  \savebox{\xoss}(0,0){
    \begin{picture}(0,0)
      \linethickness{0.40mm}
      \put(-2.00,-2.00){\circle*{0.8}}
      \put(-2.00,2.00){\circle*{0.8}}
      \put(2.00,-2.00){\circle*{0.8}}
      \put(2.00,2.00){\circle*{0.8}}
    \end{picture}
  }
  \linethickness{0.25mm}
  \scriptsize
  \multiput(0,0)(10,0){19}{\line(0,1){230}}
  \multiput(0,0)(0,10){24}{\line(1,0){180}}
  % BL ball
  \put(005,005){\usebox{\xoss}}
  \put(005,015){\usebox{\xoss}}
  \put(005,025){\usebox{\xoss}}
  \put(005,035){\usebox{\xoss}}
  \put(005,045){\usebox{\xoss}}
  \put(015,005){\usebox{\xoss}}
  \put(015,015){\usebox{\xoss}}
  \put(015,025){\usebox{\xoss}}
  \put(015,035){\usebox{\xoss}}
  \put(015,045){\usebox{\xoss}}
  \put(025,005){\usebox{\xoss}}
  \put(025,015){\usebox{\xoss}}
  \put(025,025){\usebox{\xoss}}
  \put(025,035){\usebox{\xoss}}
  \put(025,045){\usebox{\xoss}}
  \put(035,005){\usebox{\xoss}}
  \put(035,015){\usebox{\xoss}}
  \put(035,025){\usebox{\xoss}}
  \put(035,035){\usebox{\xoss}}
  \put(035,045){\usebox{\xoss}}
  \put(020,020){\circle*{4}}

  % BR ball
  \put(005,185){\usebox{\xoss}}
  \put(005,195){\usebox{\xoss}}
  \put(005,205){\usebox{\xoss}}
  \put(005,215){\usebox{\xoss}}
  \put(005,225){\usebox{\xoss}}
  \put(015,185){\usebox{\xoss}}
  \put(015,195){\usebox{\xoss}}
  \put(015,205){\usebox{\xoss}}
  \put(015,215){\usebox{\xoss}}
  \put(015,225){\usebox{\xoss}}
  \put(025,185){\usebox{\xoss}}
  \put(025,195){\usebox{\xoss}}
  \put(025,205){\usebox{\xoss}}
  \put(025,215){\usebox{\xoss}}
  \put(025,225){\usebox{\xoss}}
  \put(035,185){\usebox{\xoss}}
  \put(035,195){\usebox{\xoss}}
  \put(035,205){\usebox{\xoss}}
  \put(035,215){\usebox{\xoss}}
  \put(035,225){\usebox{\xoss}}
  \put(020,210){\circle*{4}}

  % TM ball
  \put(135,105){\usebox{\xoss}}
  \put(135,115){\usebox{\xoss}}
  \put(135,125){\usebox{\xoss}}
  \put(145,105){\usebox{\xoss}}
  \put(145,115){\usebox{\xoss}}
  \put(145,125){\usebox{\xoss}}
  \put(155,095){\usebox{\xoss}}
  \put(155,105){\usebox{\xoss}}
  \put(155,115){\usebox{\xoss}}
  \put(155,125){\usebox{\xoss}}
  \put(155,135){\usebox{\xoss}}
  \put(165,095){\usebox{\xoss}}
  \put(165,105){\usebox{\xoss}}
  \put(165,115){\usebox{\xoss}}
  \put(165,125){\usebox{\xoss}}
  \put(165,135){\usebox{\xoss}}
  \put(175,095){\usebox{\xoss}}
  \put(175,105){\usebox{\xoss}}
  \put(175,115){\usebox{\xoss}}
  \put(175,125){\usebox{\xoss}}
  \put(175,135){\usebox{\xoss}}
  \put(160,115){\circle*{4}}

  % TL monolith
  \put(135,005){\usebox{\xoss}}
  \put(135,015){\usebox{\xoss}}
  \put(135,025){\usebox{\xoss}}
  \put(145,005){\usebox{\xoss}}
  \put(145,015){\usebox{\xoss}}
  \put(145,025){\usebox{\xoss}}
  \put(155,005){\usebox{\xoss}}
  \put(155,015){\usebox{\xoss}}
  \put(155,025){\usebox{\xoss}}
  \put(165,005){\usebox{\xoss}}
  \put(165,015){\makebox(0,0){\vrule height 6mm width 6mm}}
  \put(165,025){\makebox(0,0){\vrule height 6mm width 6mm}}
  \put(165,035){\usebox{\xoss}}
  \put(165,045){\usebox{\xoss}}
  \put(175,005){\usebox{\xoss}}
  \put(175,015){\usebox{\xoss}}
  \put(175,025){\usebox{\xoss}}
  \put(175,035){\usebox{\xoss}}
  \put(175,045){\usebox{\xoss}}
  
  % TR monolith
  \put(135,205){\usebox{\xoss}}
  \put(135,215){\usebox{\xoss}}
  \put(135,225){\usebox{\xoss}}
  \put(145,205){\usebox{\xoss}}
  \put(145,215){\usebox{\xoss}}
  \put(145,225){\usebox{\xoss}}
  \put(155,205){\usebox{\xoss}}
  \put(155,215){\usebox{\xoss}}
  \put(155,225){\usebox{\xoss}}
  \put(165,185){\usebox{\xoss}}
  \put(165,195){\usebox{\xoss}}
  \put(165,205){\makebox(0,0){\vrule height 6mm width 6mm}}
  \put(165,215){\makebox(0,0){\vrule height 6mm width 6mm}}
  \put(165,225){\usebox{\xoss}}
  \put(175,185){\usebox{\xoss}}
  \put(175,195){\usebox{\xoss}}
  \put(175,205){\usebox{\xoss}}
  \put(175,215){\usebox{\xoss}}
  \put(175,225){\usebox{\xoss}}
  
  \linethickness{0.50mm}

  % L swabs
  % \put(085,225){\usebox{\xoss}}
  % \put(095,225){\usebox{\xoss}}
  % \put(105,225){\usebox{\xoss}}
  % \put(115,225){\usebox{\xoss}}
  % \put(125,225){\usebox{\xoss}}
  % \put(085,215){\usebox{\xoss}}
  % \put(095,215){\usebox{\xoss}}
  % \put(105,215){\usebox{\xoss}}
  % \put(115,215){\usebox{\xoss}}
  % \put(125,215){\usebox{\xoss}}
  \put(090,220){\circle{6}}
  \put(105,220){\circle{6}}
  \put(120,220){\circle{6}}
  
  % R swabs
  % \put(085,005){\usebox{\xoss}}
  % \put(095,005){\usebox{\xoss}}
  % \put(105,005){\usebox{\xoss}}
  % \put(115,005){\usebox{\xoss}}
  % \put(125,005){\usebox{\xoss}}
  % \put(085,015){\usebox{\xoss}}
  % \put(095,015){\usebox{\xoss}}
  % \put(105,015){\usebox{\xoss}}
  % \put(115,015){\usebox{\xoss}}
  % \put(125,015){\usebox{\xoss}}
  \put(090,010){\circle{6}}
  \put(105,010){\circle{6}}
  \put(120,010){\circle{6}}

  % B swabs
  % \put(005,095){\usebox{\xoss}}
  % \put(005,105){\usebox{\xoss}}
  % \put(005,115){\usebox{\xoss}}
  % \put(005,125){\usebox{\xoss}}
  % \put(005,135){\usebox{\xoss}}
  % \put(015,095){\usebox{\xoss}}
  % \put(015,105){\usebox{\xoss}}
  % \put(015,115){\usebox{\xoss}}
  % \put(015,125){\usebox{\xoss}}
  % \put(015,135){\usebox{\xoss}}
  \put(010,100){\circle{6}}
  \put(010,115){\circle{6}}
  \put(010,130){\circle{6}}
  
\end{picture}
\end{center}
\end{document}
