Mini Verniers
https://www.youtube.com/watch?v=cOj_PhOJs-g
- Print both parts slow, around 20 or 30 mm/s, at 0.2mm layer height
- Print the ruler part horizontally with supports (so layer lines go lengthwise down the ruler, as it will snap easily in other orientation)
-Print the base part with no support, with the gap for the ruler facing upwards
- Brim on both parts recommended