Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:


Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

Pen&Ruler / Pen


Who has never forgotten their ruler or has had problems finding it when we have needed it? Most of the time we use a pen or a pencil to trace a line. This is never that reliable because it might happen that our fingers slip or we trace the line at the side or in the wrong way. My “pen-ruler” makes it possible to be interlocked with other pens and to be able to create an auxiliary ruler enabling us to fix the problems mentioned above and to measure different lengths at the same time.


Ecole des mines de nancy

Ecole des mines de nancy
nancy, France



Devrouze, France