documentclass[tikz,border=2pt]{standalone}

begin{document}

tikzset{
    pics/numcirc/.style args={#1/#2}{
      code = {
        draw circle (1);
        foreach i in {1,...,#1}
          draw (90+i*360/#1:1) -- (90+i*360/#1:1.5);
        foreach i in {1,...,#2}
          draw (90+i*360/#2:0) -- (90+i*360/#2:0.5);
    }}}

begin{tikzpicture}

draw pic at(0,0) {numcirc=8/6};
draw pic at(4,0) {numcirc=6/4};
draw pic at(8,0) {numcirc=12/8};

end{tikzpicture}

end{document}

documentclass{report}
usepackage{tikz}

begin{document}
begin{tikzpicture}[thick]
foreach a in {0,45,...,315}{
  draw (a:2)--(a:3);
}
foreach a in {0,60,...,300}{
  draw[red] (0,0)--(90+a:1.8);
}

draw (0,0) circle (2cm);
end{tikzpicture}
end{document}