Titaner Tisolver: 3-in-1 Titanium Calculating Ring Ruler

Hi! We are Titaner.

Over the past five years, we’ve proudly delivered our passion projects to over 43,545+ backers around the world. Now, we’re excited to unveil our 66th Kickstarter campaign:

Titaner Tisolver: 3-in-1 Titanium Calculating Ring Ruler

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Reviving the lost art of analog calculation.

Before silicon chips ruled the world, before glowing screens took over our thinking, engineers relied on slide rules to build skyscrapers—and even to send humans to the Moon.

Computation in that era was about finding answers through direct interaction with the physical world. It carried a particular clarity—an unmistakable kind of romance belonging to the mechanical age.

At Titaner, we have long been fascinated by this kind of intelligence at the fingertips.

Years ago, we created the world’s first titanium ring ruler, completely redefining what a “ruler” could be. That original point in titanium became the starting point of a long evolution.

After three generations of iteration, our pursuit of precision has diverged into two clearly different paths:

• Pure Measurement: focused on accurate measurement of physical dimensions (such as the classic Tiroler).
• Analog Calculation: focused on logical computation and unit conversion.

Today, we are proud to introduce the latest piece in this line of calculation — Tisolver.

It is a bridge between the physical world and the mathematical world. It takes the accumulated wisdom of the slide rule and houses it in an aerospace-grade titanium body, bringing analog calculation back to your fingertips.

We are not simply selling a ruler; we are delivering a portable geometric solution.

We are not just making tools—we are listening to your voices.

On our previous calculating ruler, we chose a fine ratcheting feel. It was smooth, but many of you told us: “I want clearer feedback.”

So with Tisolver, we responded by bringing back the widely praised soul of the first-generation Tiroler—the high-strength magnetic lock.

Every time Tisolver completes a full rotation (10 cm), the magnetic system releases a clear, firm tactile pulse, accompanied by a crisp “click.”
That click is a private signal between you and the numbers. You don’t need to stare at the scale constantly—your fingers and your ears tell you how far it has traveled. This is intuition in its most practical, craftsman-like form.

Simple and intuitive, with no mental math required:
(Number of clicks × 10) + current reading = total length

Here’s a simple example:

👂 Hear 2 clicks / tactile pulses (20 cm)
👀 Align the window with 3 (3 cm)
✅ Result = 23 cm

With this built-in navigation system, you are finally freed from the limitations of a straight ruler.

Effortlessly measure all kinds of irregular curves in daily life—this is the unique appeal of the ring ruler.

Standard CNC knurling is cool—but on certain extreme surfaces, it still isn’t enough.

So for Tisolver, we upgraded the contact surface with a custom soft rubber O-ring, delivering a higher level of physical friction.

But for Titaner, that still wasn’t enough.

This is an invisible design—something you won’t see, but you will feel in use. On the inner side of Tisolver’s metal rim, we precisely machined a ring of special reverse anti-slip teeth. These metal teeth firmly bite into the inside of the soft rubber O-ring.

The result?

Whether on a greasy workshop table or freshly splashed wet glass, Tisolver stays planted and rolls with control—like a gecko gripping a surface.

Blurry readings? No. We gave Tisolver a pair of tactical glasses.

In pursuit of the best possible reading experience, bare metal markings were not enough for us. We designed a precise quarter-arc transparent reading window. It’s not just a cover—it functions more like an optical component.

At first glance, you’ll notice a vivid red reference line embedded at the center of the window. It works much like a sniper scope, locking onto the scale and making the numbers easier to read at a glance.

We use PMMA (recyclable acrylic), precision-machined on top-tier CNC equipment.
It offers over 92% light transmission—higher than standard glass—while delivering 10–15× the impact resistance of glass.

PMMA is BPA-free, non-toxic, and when burned, it primarily produces carbon dioxide and water. It also has excellent resistance to aging and UV exposure, remaining clear and stable for over ten years.

This is the most suitable material we could find for the job.

The Titaner-level detail lies in how this window is executed. It perfectly follows the curvature of the ring ruler and intentionally includes a slight raised clearance. This space prevents the transparent window from rubbing against the finely etched markings inside, while also providing a degree of physical protection for those markings. At the same time, it introduces a subtle parallax effect that helps achieve clearer, more accurate readings.

Tisolver is not just for recording data—it’s for solving problems.
By etching two of the most commonly used engineering logics onto the titanium Side A and Side B, Tisolver transforms from a simple ruler into an analog computer.

Want to know what the data in your hand looks like in another language?
In a world where metric and imperial systems coexist, conversion is always a headache
(1 inch = 2.54 cm? Forget it—no one wants to do mental math while working).
Tisolver makes this intuitive. On Side A, we laser-etched both a 10 cm metric scale and a 4-inch imperial scale on the same ring. It becomes a physical bridge between two measurement languages.

First, use the built-in magnetic tactile feedback to return Tisolver to zero, and align the transparent HUD window with the zero mark. This is the starting point for all calculations.

For values under 10 cm (for example, 7 cm), simply rotate the transparent window and align the red reference line with the metric number 7.
The imperial scale that the pointer crosses at that moment is your answer.

If you measured the length with Tisolver first and then convert units, you’ll notice that the red line naturally aligns with both metric and imperial values at the same time—simple and intuitive.

For larger numbers—say, the “ultimate answer to the universe,” 42—this is where classic slide-rule logic comes in: the decimal shift.

• Move the decimal point one place to the left: 42 → 4.2
• Rotate the window to align with metric 4.2
• Read the corresponding imperial value, then move the decimal point back one place (×10)

No need to open an app. Just glance down—the answer is already there.
Measurement, calculation, and communication have never flowed this smoothly.

A traditional ruler can only tell you how long a line is.
Tisolver can tell you how large a surface is.

For designers, leather crafters, and DIY enthusiasts, this is more than a ruler—it’s a secret weapon in your pocket. As you measure a side length, the corresponding squared value (area) appears directly.

Cutting a square piece of vegetable-tanned leather? Estimating the coverage area of a wooden board?

Measure just one side, and you can immediately anticipate the area. This isn’t simple arithmetic—it’s the magic of unfolding a one-dimensional world into two dimensions.

On Side B, we built an entirely new logic:

The outer ring retains the standard 10 cm metric scale.
The inner ring is etched with a dedicated square-calculation scale.

The operation is as natural as breathing.

Just like Side A, use the magnetic tactile feedback to return Tisolver to zero, and align the transparent HUD window with the zero mark.

Simply rotate the transparent window and align the red reference line with the side length on the outer scale (for example, 5 cm).
Before you even have time to think, the red line is already pointing to the calculated result on the inner scale (25).

If you measured the length with Tisolver and then perform the calculation, you’ll notice that the red line aligns with both the metric value and the squared value at the same time. The interesting part is that when you flip Tisolver over, the red line also aligns with the corresponding imperial value. In other words, with a single measurement, you get the imperial equivalent and the squared result at once.

This is the appeal of analog calculation—no buttons, no waiting, just a direct physical connection between input and output.

With a single measurement, you can obtain both the imperial equivalent and the squared value. What’s the secret behind this?

In this design, we carefully arranged the scale logic. Side A and Side B roll in opposite directions, giving Tisolver true all-around adaptability.

It’s not just that one roll reveals all the related values. More importantly, no matter whether you naturally pull from left to right or push from right to left—whether you’re left-handed or right-handed—the dual-side scale logic of Tisolver adapts naturally to your intuition.

You don’t need to decide in advance whether you’re “calculating area” or “checking imperial units.” Just focus on the measurement itself.

Once the roll is complete, the distance is structurally locked. At that moment:
Want metric-to-imperial conversion? Look at Side A.
Want area estimation? Look at Side B.
Or maybe you simply have a number in mind and want to know its square or its imperial equivalent.

All the data in Tisolver exists simultaneously. This non-linear workflow lets you move through complex tasks with ease.

Tisolver shouldn’t be buried in the dark corner of a toolbox.
It’s a badge—representing your appreciation for precision manufacturing and logical thinking.

We designed Tisolver so you can carry it with you 24 hours a day.
It’s both a tool—and a seriously functional everyday carry item.

Every Tisolver comes with a lanyard. You can wear it on your chest, where it becomes an engineer’s talisman, always ready for the next measurement challenge. Or you can attach it to your tactical backpack, zipper pull, or keychain. Its matte titanium-gray finish subtly elevates the look of your entire EDC setup.

Looking for even more protection? You can add our custom vegetable-tanned leather sheath. Over time, the leather will darken and develop a natural patina, recording the marks of use and time—forming a quiet contrast between soft leather and titanium that never wears out.

When you’re stuck thinking through a solution, or waiting for a render to finish exporting, your hands need something to release the tension. Tisolver becomes that switch for your thinking.

Thanks to its addictive magnetic mechanism, Tisolver doubles as a high-quality fidget toy.

This crisp, rhythmic mechanical feedback helps ease anxiety and guide the mind into a flow state. It doesn’t distract you—it helps you focus.

For us, “designed for lifelong use” is not just a promise engraved in metal—it’s a philosophy of growing and evolving together with you. And this Kickstarter campaign is where that philosophy truly comes to life.

Our designers are not working alone in a closed workshop. They stand here alongside you—our most trusted partners and co-creators—listening carefully to every idea and suggestion. Because we firmly believe that a truly great product is never created in isolation; it is shaped by the real experience and insight of the people who rely on it every day.

The journey of Titaner Tisolver does not begin on an assembly line. It begins with a solid block of GR5 titanium.

Like Michelangelo facing a block of marble, we use top-tier CNC machines to carve each component over many hours of precise machining. Every edge is finished with smooth, rounded CNC chamfers.

To be honest, this is time-consuming, labor-intensive work—something few are willing to do. But we believe true quality doesn’t need to be explained in a manual. The moment you hold it in your hand, you’ll understand.

That warm, smooth feel, as if it naturally belongs in your palm; the flawless detailing that never catches your skin, no matter the angle—
all of it tells you one thing: our obsession is worth it.

Sweat, rain, seawater—for inferior metals, these are nightmares.

They can turn so-called “tough” tools into rusted, fragile objects overnight. But our hero—GR5 titanium—is completely immune.

It is non-toxic, skin-friendly, and corrosion-resistant—a “super material” safe enough to be implanted in the human body. No matter how harsh the environment, it remains clean and stable, protecting you through every adventure.

We chose an extremely fine blasted matte finish. It removes the cold, harsh feel of raw metal and gives the body a smooth, pebble-like warmth and a refined grip.

This matte surface creates ideal diffuse reflection, reducing glare under strong light and making the engraved scales easier to read.

In addition to the metric version, Tisolver is also available in an imperial option.

We previously designed our imperial ring ruler with a 5-inch circumference. However, we recognized that the imperial system is fundamentally base-12, and 5 inches proved cumbersome for real-world calculations.

That’s why we re-engineered the TiSolver with a 6-inch imperial circumference.

2 Rolls = 1 Foot.

This base-12 optimized adjustment transforms traditionally awkward imperial math into an experience that is unprecedentedly smooth and intuitive.

The unboxing moment should be part of the experience as well.
Your Titaner Tisolver arrives in a beautifully designed gift box. Whether you’re rewarding yourself after a hard year, or giving it to a friend or family member who shares your love for life, it’s a gift that’s sure to earn a genuine “Wow.”

One more thing worth mentioning: this elegant box is made from 100% recycled paper.
Yes—while pursuing performance and precision, we’re also making a small effort for the planet.

We are not newcomers to Kickstarter. Over the past five years, we have successfully delivered our work to more than 43,535 backers. We’ve faced every challenge you can imagine (yes, including those epic supply-chain issues) and have maintained a 100% fulfillment rate throughout.

We understand that in the world of crowdfunding, keeping your word matters far more than polished language.
But don’t just take it from us—listen to what longtime members of the Titaner community have to say.