\documentclass[12pt]{report}
\usepackage{tikz}
\usetikzlibrary{arrows}
\linespread{1.5}
\textwidth=16truecm \textheight=23truecm \voffset=-1truecm
\hoffset=-1 truecm \thispagestyle{empty}
\begin{document}
\begin{tikzpicture}[xscale=1.2, yscale=2.5]
\node[draw] (A) at (0,4);
\node[draw] (B) at (4,2) ;
\end{tikzpicture}
\end{document}