Skew calibration check for XY and Z (zx,zy) axes (axis)

Two models. One for XY, which is low and takes about 15 minutes to print.
Another one for Z (ZX,ZY) and has a very tall cylinder which prints about 40 minutes.
Models have marks to measure from.
XY models is 200x200 mm
Z model is 200x200x152mm

USAGE:
XY:
Print. Do not remove from print bed. Measure diagonals. Must be the same length and go through the center.
Z:
Print. Do not remove from print bed. Measure distance from end of marks on top of cylinder to marks on the bottom. Must be