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:

iF SOCIAL IMPACT PRIZE
(free of charge)

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

Publish your project

unlimited ruler / office supplies

unlimited ruler
unlimited ruler

This design use the structure of relative sliding.When drawing a section of line,you should slide the first half and the latter half of the ruler.,and you can draw any
length straight line.
This ruler overcome the traditional ones which too short to draw a line from start
to finish.

University

HUNAN UNIVERSITY OF TECHNOLOGY

HUNAN UNIVERSITY OF TECHNOLOGY
ZhuZhou, China

Design

HUNAN UNIVERSITY OF TECHNOLOGY

HUNAN UNIVERSITY OF TECHNOLOGY
ZhuZhou, China

Yanli Gu

Design

SHANDONG UNIVERSITY

SHANDONG UNIVERSITY
JiNan, China

Zhemeng Shi