用来测试打印配置公差的模型，仅需16g材料，建议改变打印配置或启用新耗材的时候打印一份。

测试插销为一头圆形一头方形，分别测试不同形状的装配间隙。

测试内容包括：
1、正方形孔洞间隙测试。

2、圆形孔洞间隙测试。

3、与M4螺丝的配合（基准直径4mm）。

4、与M4螺母的配合（基准六边形内接圆直径7mm）。

5、从0到0.7mm的接缝测试，最小接缝可从板侧面的刻度条读数。
 

A model for testing printing tolerance configurations, requiring only 16g of material. It is recommended to print a copy when changing printing configurations or using new materials.

The test pin has a round shape on one end and a square shape on the other end, testing the assembly gaps for different shapes.

The test includes:

1. quare hole gap test.
2. Round hole gap test.
3. Fit with M4 screws (reference diameter 4mm).
4. Fit with M4 nuts (reference hexagon inscribed circle diameter 7mm).
5. Seam test from 0 to 0.7mm, with the minimum seam readable from the scale bar on the side of the board.