\begin{tikzpicture}
    \grating[grooves=5] at (0,0);
    \grating[grooves=6] at (1,0);
    \grating[grooves=7] at (2,0);
    \grating[grooves=8] at (3,0);
    \grating[grooves=9] at (4,0);
    \grating[grooves=10] at (5,0);
    \node[anchor=east] at (-1,0){\verb!grooves = 5,6,7,8,9,10!};
    \grating[groovethickness=0.1] at (0,-1.5);
    \grating[groovethickness=0.5] at (1,-1.5);
    \grating[groovethickness=1] at (2,-1.5);
    \grating[groovethickness=1.5] at (3,-1.5);
    \grating[groovethickness=2] at (4,-1.5);
    \grating[groovethickness=2.5] at (5,-1.5);
    \node[anchor=east] at (-1,-1.5){\verb!groovethickness = 0.1,0.5,1,1.5,2,2.5!};
\end{tikzpicture}