There is a howto  that explains how to apply the license to a project.

http://www.ohwr.org/documents/294

Here an example how I handle it for one of my board designs:

https://github.com/OpenMusicKontrollers/chimaera_sensor_unit

I use it for all my hardware projects. I live in the same country as CERN and confident that they made sure that it's at least compatible with our national law.

When dealing with hardware, a license should tell how patents are handled. CC licenses don't do that, afaik.

Have a look at the best practices by the 'open source hardware association', there is also a paragraph about licensing.

http://www.oshwa.org/sharing-best-practices/

I tend to use CC licenses for hardware. You can customize as you see fit (non commercial, attribution, etc or wide open). I have not seen the cern license before, but it looks interesting..