<div>There is a simpler example here: (The protractor)</div>
<div><a href="http://tug.org/PSTricks/main.cgi?file=Examples/polar">http://tug.org/PSTricks/main.cgi?file=Examples/polar</a></div>
<div> </div>
<div>I think if you modify as below. You should produce a nice grid. I didn't test this if there are errors look to the example.</div>
<div> </div>
<div>Buddy</div>
<div> </div>
<div>\documentclass{article}</div>
<div>\usepackage{pstricks,multido}<br>\SpecialCoor<br>\begin{document}<br>\begin{pspicture}(-6,-6)(6,6)<br> \pscircle{5}<br> \multido{\i=10+10}{36}{%</div>
<div> \rput{\i}(5.2;\i){\i}<br> \psline(0;\i)(5;\i)}<br>\end{pspicture}<br>\end{document}<br></div>