contour gauge tool
You can see the object assembly instructions on this video :
https://youtu.be/ldrPV6wFCKo
This 3d tool print permits to report the profile or the contour for an object or a form.
It's useful to trace and cut a tiles or wood floor.
The tip is used to precise measurement on small objects.
The bearings are used for a long form like to report a wall.
Additional parts:
MR115-2RS Ball Bearing 5x11x4mm
608 2RS Ball Bearings
screw m3x6