This 3D printer calibration tool fits the **Golden Rectangle**.
A ratio of 161.8mm to 100.0mm.
Many objects in nature, the arts and archtecture adhere to the rules of the Golden Ratio.
![](https://forum.level1techs.com/uploads/default/original/3X/3/6/36265987ea739d094f3eb98cc6a93e0254c3fd50.jpg)