Here is a tikz
version which automatically gets you all the flexibility inherent in tikz
such as rotating the symbol to be appropriate for the axis, adjusting the line style, colors, arrow style, etc...

Further Enhancement:
- Automatically rotate the symbol to be along the path.
- Provide a style setting that can be used to customize the symbol
Code:
\documentclass[border=2pt]{standalone}
\usepackage{tikz}
\newcommand{\AxisRotator}[1][rotate=0]{%
\tikz [x=0.25cm,y=0.60cm,line width=.2ex,-stealth,#1] \draw (0,0) arc (-150:150:1 and 1);%
}
\begin{document}
\begin{tikzpicture}
\draw (0,0) -- (3,0) node [midway] {\AxisRotator};
\draw (0,0) -- (0,-3) node [midway] {\AxisRotator[rotate=-90]};
\draw (0,-3) -- (3,0) node [midway] {\AxisRotator[rotate=60]};
\end{tikzpicture}
%
\begin{tikzpicture}
\draw (0,0) -- (3,0) node [midway] {\AxisRotator[x=0.2cm,y=0.4cm,->,densely dotted]};
\draw (0,0) -- (0,-3) node [midway] {\AxisRotator[x=0.2cm,y=0.4cm,->,rotate=-90,blue, dashed]};
\draw (0,-3) -- (3,0) node [midway] {\AxisRotator[x=0.2cm,y=0.4cm,->,rotate=60, red ]};
\end{tikzpicture}
\end{document}
!
in front of it to turn it into a link. A moderator or another user with edit privileges can then reinsert the!
to turn it into an image again.)