Calibration Cube 1 inch = 25.4 mm

This must be one of the simplest things on Thingiverse and a nod to the Imperial measurement system. One line of code in OpenSCAD.

cube([25.4, 25.4, 25.4]);

The cube should print with sides of 1 inch or 25.4 mm. I'm printing on a very basic printer - the Malyan M200 (same as Monoprice Select Mini) and mine comes out plus/minus 0.1 mm so I'm really pleased with that result.

I hope you find it useful :)