I am puzzled by the appearance of this tiny piece of text:
\documentclass{article}
\begin{document}
12 to 15
\end{document}
It depends a little on the zoom level, but it's probably not just me who notices that the space between 2 and t is smaller than the space between o and 1. I know that LaTeX has monospace digits, but I was not aware that this extended beyond math mode.
Is there anything that one can do so typeset digits with a more balanced space around them?



1so you can preceded1 by\kern-something` with some size to taste but it is not very automatic. the lm fonts have proportional digits, see http://tex.stackexchange.com/questions/247530/difference-between-cfr-lm-and-lm-package/247543#247543 – David Carlisle Oct 20 '15 at 23:40\kern-somethingdepend on the character that precedes1,2etc. or could the correct value be figured out once for each digit? – bers Oct 21 '15 at 13:26