\documentclass{standalone}
\usepackage{binarytree}
\begin{document}
\btreeset{%
draw missing,%
separate,%
level distance scales=false,%
sibling distance scales=false,%
scale=0.5}
\def\arraystretch{1.5}
\begin{tabular}{cc}
none scales & both scale \\
\BinaryTree{}{3} &
\BinaryTree[yscale=1.7,level distance scales,%
sibling distance scales]{}{3} \\
level distance scales & sibling distance scales \\
\BinaryTree[yscale=1.7,level distance scales]{r}{3} &
\BinaryTree[sibling distance scales]{}{3}
\end{tabular}
\end{document}