\psset{xunit=1cm, yunit=1cm}
%\psframebox{
\begin{pspicture}(-1,-1)(6,6)
%\psgrid(0,0)(5,2.5)

\pspolygon[linewidth=0.4pt,fillstyle=solid](1,1.8)(2,1.8)(2,2.2)(1,2.2)
\pspolygon[linewidth=0.4pt,fillstyle=solid](4,1.8)(5,1.8)(5,2.2)(4,2.2)
\pspolygon[linewidth=0.4pt,fillstyle=solid](4,1.8)(5,1.8)(5,2.2)(4,2.2)
%\rput[c](-1,-0.25){$-e$}
%\rput[c](1,-0.25){$e$}
%\psline[linecolor=blue,linewidth=0.2pt,linestyle=dashed](-1,0)(-1,1.5)
%\psline[linecolor=blue,linewidth=0.2pt,linestyle=dashed](-1,1.5)(1,1.5)
%\psline[linecolor=blue,linewidth=0.2pt,linestyle=dashed](1,1.5)(1,0)
%\psline(0,0)(4,3)
%\psbrace[linecolor=orange,linewidth=0.2pt,ref=lC,nodesepA=5pt](1.1,0)(1.1,1.5){$H$}
%\psarc[linecolor=orange](0,1.5){2}{180}{360}
%\psbrace[linecolor=green,linewidth=0.2pt,ref=lC,nodesepA=5pt](0.05,0.5)(0.05,1.5){$h$}
%\psplot[linecolor=yellow]{0.01}{1}{1 x div}
%\rput[c](1.5,-0.1){$x$}
%\rput[c](-0.2,1.8){$y$}

\end{pspicture}%}
%%http://sites.inka.de/picasso/latex.html


%ticks=none,labels=none]{->}(