Z axis calibration and verification using 0.100" (2.54mm) pitch headers

This is a calibration object, to help with printing header probes that requires accuracy
in the z axis.

This was specifically created to help calibrate my 3d printer to print this probe https://www.thingiverse.com/thing:3051216 that required accurate z height axis, to ensure the header probes are spaced correctly.

To calibrate, try printing this object and measure that the 40mm and 20mm walls are sized correctly. If it printed properly, you can fit your standard 0.100" (2.54mm) pi