The file 'Page Ruler V1 (line-spacer) Rhodia Notebook 3D Printer Model' is (stl) file type, size is 39.9KB.
This is for drawing lines in your notebook. It happens to fit the Rhodia Notebook sized A5
When applying downward pressure with a pencil, the PLA might bend causing the line to be askew. The solution is putting your finger underneath the plastic to hold it straight.
I might make a 2nd version to solve this issue
I made different line spacings. I will share the one I personally use here for free which is 8.5mm
You will find the fusion360 editable file on my cults3d page and all the other line spaces from 3mm to 12mm
page_ruler_8.5mm.stl | 221.6KB |