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

Scratch Ruler / ruler

Scratch Ruler

Lint has its unique feature, when you slide the fur against the positive direction, it’s color turns deeper but you can erase it sliding it oppositely, which easy to record the number whenever you want even without a pen.


Guangdong University of Technology

Guangdong University of Technology
Guangzhou, China