\documentclass[twoside,12pt]{article}

\setlength{\textwidth}{6.5 in}
\setlength{\textheight}{8.5 in}
\setlength{\topmargin}{0 in}
\setlength{\headheight}{0.25 in}
\setlength{\headsep}{0.25 in}
\setlength{\evensidemargin}{0 in}
\setlength{\oddsidemargin}{0 in}
\setlength{\parskip}{1ex}

\usepackage{graphics}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{latexsym}

\begin{document}

\pagestyle{empty}

\begin{center}
\resizebox{6in}{!}{\includegraphics{grid.eps}}
\end{center}

\end{document}