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Unboxing & Review


T³ scale ruler & T ruler-The Reformation of Measurement Tool

Ruler with 12 scales, magnets for easy attach, separable feature, cm, Inch, Point, Pica A must-have measurement tool for professionals
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T³ – The three in one ruler, with more scales and functions that allows higher flexibility to your work. The beauty lies in its simple design with much enhanced details.


Standard Y-shape scale ruler usually contains 6 scales, which may not be useful enough for professional design. These rulers, sometimes, are either too big to be carried around, or too small that the measurement cannot be read properly. T³ pinpoints all the problems and provide 12 scales, which can be split into 3 separate rulers, every detail in T³ is enhanced to provide better user experience.

Our concept of T³ comes from Tower Crane – an agile machinery that offers amazing lifting capability. We see geometry in the crane, more than just a physical triangular structure. These three-line shapes are often seen in architectural design as they provide strength and stability.  is designed in a way that a symmetrical triangle can be formed through using 3 of its individual triangular ruler, such design allows each T-ruler to carry 4 scales/graduations. With the built-in precise magnetics,  looks no different from standard ruler, but it provides much more functions. T³ is a never-before-seen creative measurement tool.

Along with all our previous designs,  follows Yuan’s principal concept that focuses on Geometry and SymmetryT³ is a practical decorated tool, while showcasing its balance and harmony through its geometric patterns when observed from atop.

Features – What’s special about T³ & T-ruler? 

T-rulers with 12 scales are held together by precise magnetic design. Consider the habitual use of regular scale rulers, the 12 scales arrangement of T³ are carefully planned:

6 frequent used scales (same as standard scale rulers) engraved on outer triangle – 1:20, 1:30, 1:40, 1:50, 1:60, 1:100 while

6 special scales engraved on inner triangle – 1:15, 1:25, 1:75, 1:80, 1:125, 1:175.

Gently switching to either side of the T-rulers, you can easily measure with the right scale.  is an ultimate ruler for architects and interior designers. 


cm, Inch, Point and Pica in 1 ruler

A regular straightedge lacks Point (~font size) and Pica, the typographic units used in printing. By using T-ruler you can conveniently translate the measurements you see on screen versus that you see on paper. By combining these 4 measurements into one ruler, T-ruler is the one tool that you need to design for both print and digital.

1 point is equal to 1/72 of an inch; 1 pica is equal to 1/6 of an inch

With its magnets, three T-rulers attached firmly against each other and can be placed firmly on any ferromagnetic material. The T-ruler series is the perfect companion for any creative professional.

 4 different Forms of  

Standard scale ruler has its own limitation where user can only use 1 scale as measurement on paper, T³ allows 4 scales, formed by 3 individual T-rulers, to be used simultaneously. Splitting them in seconds is just as easy.

The four ways of using:

1 – use one of the T-rulers singly and share the others to friends for use

2 – easily switch the two rulers to either side and you can select your preferred scale

3 – combined three rulers to be used as a standard scale ruler

4 – flatten the rulers to be used as a bookmark

 30° Slope  

T-ruler is designed in triangular shape with a 30° slope standing on one face. The angled slope gives easier readings on the measurement and the user can get a better grip. The user experience is better than the typical, primary school ruler.

 Mountain-like Hash Marks

We have spent a lot of time considering and testing the layout of hash marks on T³. The scaling hashes and millimeters are presented like mountains, making it easier to identify specific millimeter measurements than common hash marks. 

Explicit Ratio on each ruler

The ratios/functions are labeled on the top of each T-ruler with comparatively larger fonts, you can easily switch to the functions where appropriate.

Built to Last

Owning to the special shape and made from aluminum, T³ is made to withstand stronger external force and not easily breakable while keeping it light in weight. The anodization allows T³ to be used for long term with an exceptional look and feel. It is cut with maximum precision and we have ensured that every ruler will measure perfectly.

 comes with our classic Matte Black anodizing with vivid white laser engraved hash marks. The sharp contrast is what makes this even more remarkable.

Perfect Size for Outdoor & Indoor

Each T-ruler is 18cm x 2cm x 0.56cm, slightly longer than a standard straightedge (15cm) but shorter than a scale ruler (30 cm). This specific length allows users to carry it conveniently while at the same time the hash marks are made much easier to be read.

The Evolution of T³  

As l was interior designer, scale ruler was the first item that I wanted to create when I first started Yuan Design Studio. However, the design and manufacturing problems back then were not as easy to be solved. In the last 5 years numerous versions came out, you can see the improvement from just a solid block of triangular brass in 2017. Although they all look like just a triangular ruler, we refined every detail to make it more flexible, functional and easy to read.

The breakthrough came in 2021 when we thought outside of the box – why can’t we combine more rulers in one version. Though it would be clumsy and not pretty enough. Then, it came to the final version of , it looks like a standard scale ruler but more than that.


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