This clip (2 required) allows you to attach a dial gauge to your Ultimaker extrusion head for more precise platform leveling.This clip is designed for a 10 mm rod that came with my dial gauge and magnetic base. It allows the rod to be mounted to one of the m3 threaded rods on the Ultimaker extrusion head and clamps in place with m3 screws.Once installed, run the extrusion head all over the build platform and watch for the gauge to move. Adjust leveling screws as required.This design worked for me but if you have any suggestions to improve it, please let me know in the comments.