This model is designed to quickly and easily clip onto the Elegoo Centauri Carbon x axis rails to mount a digital dial gauge for flatness/level measurements. This is useful when checking your bed for manual leveling, or for extremely precise calibration to each build plate even. 

The specific gauge used here is the generic "allmeter" brand found on Amazon (https://www.amazon.com/dp/B0D4YWQ9MF), however any brand following this design should work fine.

The bracket is designed to be printed twice, and then simply flipped and rotated, allowing the gauge and both sides to slide together over the rails with no fasteners and easy removal once complete.

To measure level, move the print head to the extremes of the x axis, mount the bracket, and then y to each extreme. The bracket easily slides along the length of the rail without requiring any removal during measurement. This will measure each of the four corners allowing you to adjust as necessary for ultra precise levelling.

As a bonus you can also measurement flatness (with or without a plate!). Simply align the bracket to one of the extremes, and monitor the gauge as you control the y axis position, after traversing the entire length of the plate, slide the bracket over your desired amount and start again. This will map the entire plate surface giving you an idea of any high or low spots! 

This was printed in PLA, 0.2mm layers, 3 walls. Any material should do though. Enjoy!