Dual Extruder Calibration Square

I needed a simple and fast calibration test piece so I created this multi layer test object.

The traffic cone and interlocking squares are just for scale and can be found on Thingiverse here:
Traffic cone:
http://www.thingiverse.com/thing:21773

Squares:
http://www.thingiverse.com/thing:124450

Just load both files and center them, slice, and print!