Hozo Design Rollova 2.0 Digital Ruler Measure any straight or curved surface up to 83 feet using this digital ruler.

By now, you’ve probably seen digital measuring tools that can precisely provide the length of any object by simply rolling across its surface. It’s a clever way of measuring literally anything, from straight distances between two points to more complicated stuff like the edges of curved objects. The Rollova 2.0 does the same thing, albeit in what is probably the most compact form factor we’ve seen.

Measuring about the size of a small cookie, the device consists of a disc that’s compact enough to fit in most any pocket on your clothes or backpack. That way, you can have a measuring tool within easy reach at all times, allowing you to quickly take down measurements at absolutely any time. Want to use it to measure your foot size? Just run it down through the longest side of your foot and you’re good. Want to see if you’ve gained a few inches around the waist? Just roll it all throughout your waist line and immediately find out whether it’s time to buy new pairs of pants.

The Rollova 2.0 is a small disc that measures 2 x 0.5 inches (diameter x thickness), with a ribbed rubber edge that provides a stable grip on all types of surfaces, all while making it difficult to accidentally slide the disc out of place and ruin an otherwise smooth-sailing measuring session. That way, it will be easy to properly roll the wheel, allowing you to take precise measurements each time out. The outfit warns not to rush measurements, by the way, as rolling the wheel any faster than 3.2 feet per second could lead to some amount of symmetrical failure. Basically, just be patient when making your measurements and you’ll be fine.

A 1.2-inch OLED display sits on the side of the disc, showing you the exact length you’re recording in real-time. It boast a bright blue display with large digits that should be easy to see even under direct sunlight, making it perfectly viable to use both indoors and outdoors.

The Rollova 2.0 can take measurements in both inches and centimeters, so both metric and imperial users can find it useful in their measurement tasks. It has a maximum measuring range of 10 meters in metric mode and 83 feet in imperial, so this will prove handy in most workshop projects, repair jobs, and even small construction jobs. Basically, anything you normally do with rulers and measuring tapes, you can do with this thing instead.

How accurate is it? According to the outfit, it has a maximum tolerance of 0.4 percent, which is low enough to be quite precise, especially for most of the projects this will likely find use in. It powers using two standard coin batteries, a fresh batch of which is supposed to last it for around two years of active use. Construction is stainless steel, aluminum, and nylon plastic for various parts of the disc, with the edge cut in silicone rubber.

Originally a Kickstarter project, the Rollova 2.0 is the second generation of the digital ruler. It’s available now, priced at $79.

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