I just needed a 45 degree overhang test, so I customized this. I figured it was probably a pretty common need, so here it is.

Customized version of http://www.thingiverse.com/thing:58218

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=58218

Using the following options:

_increment = 5
_type = both
_height = 6
_fontSizePercent = 65
_end = 45
_start = 45
_width = 7
_spineWidth = 2