# Better way to produce V\llap{--}

Is there a better way to get the symbol produced by V\llap{--}? I need it in math mode. The symbol is someitmes used to represent volume. The above hack is not the right symbol but something close.

-
How about \forall? Does it fit your requirements? – Count Zero Aug 27 '12 at 12:29
@CountZero I need the dash to extend beyond the V. – mythealias Aug 27 '12 at 12:37
Can you please upload (provide a link to) an image showing the desired symbol used in context? – Gonzalo Medina Aug 27 '12 at 13:05
@GonzaloMedina the symbol is usually used when writing Reynolds transport equation. This pdf file shows it in use. – mythealias Aug 27 '12 at 17:36

\documentclass{article}
\newcommand{\volume}{\mathop{\ooalign{\hfil$V$\hfil\cr\kern0.08em--\hfil\cr}}\nolimits}
\begin{document}
$\volume(abc)$
\end{document}


-
Thank you. This works. – mythealias Aug 27 '12 at 17:33

I was looking for the same thing, but found it a bit distracting to have the cross extend beyond the lines of the V. I came up with an alternative approach:

\documentclass{article}

\usepackage{graphicx}

\newcommand{\Vol}{\rotatebox[origin=c]{180}{\ensuremath{A}}}

\begin{document}
Let $\Vol$ represent system volume.
\end{document}


-