Creating an a4 with rulers to test the output accuracy of a printer

I recently bought a new printer and wanted to test its borderless printing capabilities. So I wrote a small VBA script that creates an A4 MS Word document with four rulers, each starting at one of the four borders:
.

In case you're interested in the source code, I put in on github. The PDF can be downloaded from here (http://renenyffenegger.ch/blog/files/a4-ruler.pdf).