\documentclass[11pt]{standalone}
% Custimize your packages here:
\usepackage{graphicx}
%\usepackage{pstricks,pst-slpe,pst-grad}
\usepackage{tikz}
\usepackage{boxdims}
\usepackage{upgreek}
\usepackage{siunitx}
\usepackage{amssymb}
\usepackage{geometry}
% for Heathkit.m4:
\geometry{paperwidth=15in,paperheight=14in,margin=1in}
\newbox\graph
\pagestyle{empty}
\thispagestyle{empty}
%
\begin{document}
  \noindent\vspace{2ex}\input{test.tex}\box\graph
\end{document}