\input basic[1,3]
\rm

$$\vbox{
\def\1{\vrule height 0pt depth 2pt}
\def\2{\vrule height 0pt depth 4pt}
\def\3{\vrule height 0pt depth 6pt}
\def\4{\vrule height 0pt depth 8pt}
\def\ruler#1#2{\hbox{$\vcenter{\hrule\hbox{\4#1}}$ #2}}
\def\\#1{\hbox to .125in{\hfill#1}}
\def\8{\\\1\\\2\\\1\\\3\\\1\\\2\\\1\\\4}
\ruler{\8\8\8\8}{4 in}
\vskip 36pt
\def\\#1{\hbox to 10pt{\hfill#1}}
\def\8{\\\1\\\1\\\1\\\1\\\2\\\1\\\1\\\1\\\1\\\4}
\ruler{\8\8\8}{300 pt}
\vskip 36pt
\def\\#1{\hbox to 1pc{\hfill#1}}
\def\8{\\\2\\\2\\\2\\\2\\\4}
\ruler{\8\8\8\8\8}{25 pc}
\vskip 36pt
\def\\#1{\hbox to 5mm{\hfill#1}}
\def\8{\\\2\\\4} % I couldn't do millimeters with our XGP server
\ruler{\8\8\8\8\8\8\8\8\8\8}{10 cm}
\vskip 6pt}$$

\vfill\end