@Code \makeatletter
@Code \newcommand{\gettikzxy}[3]{%
@Code      \tikz@scan@one@point\pgfutil@firstofone#1\relax
@Code      \edef#2{\the\pgf@x}%
@Code      \edef#3{\the\pgf@y}%
@Code      \pgfmathparse{#2/28.3465} \let#2\pgfmathresult;
@Code      \pgfmathparse{#3/28.3465} \let#3\pgfmathresult;
@Code }
@Code \makeatother

<BR>
Usage:

@Code Points.tikz.tex


@Image Points.svg