BIG but QUICK 20cm XYZ calibrator

thingiverse

For the best acuracy in 3D printer calibration I decided to design a simple test for relatively big dimension. So you recive three 20cm legs (one pre each axis) wich fits for majority of printers. To verify the sets of stepper motors you can use evan a ruler. For greater accuracy I added 10cm thresholds for caliper (depth gauge will be useful for the second part of each arm). Thanks to the fact I is build only of small crossection legs it is relatively qick for print.