Wenxin Fang of Redmond, Wash., launched a hardware startup to create the ZeroPivot Protractor, a sleek, precision-machined aluminum replacement for the tool that gave him problems in math class.

For many years, the protractor has been one of the essential tools used in classrooms and workshops in geometry and design.

Your Android has more measuring tools than you think.

Last time, my fourth-grade third son scored 8 points on a 50-question kanji test. This time, he scored 5 points on a math test about "angles," so my "engineer-at-heart" blood started stirring again.

Have you ever thought, 'Wait, is this angle correct?' or 'It's a hassle to keep switching between a ruler and a protractor when drawing plans...'? To all DIYers and drafters struggling with such ...

Some people have thumbs that are hypermobile. This means they bend backward beyond the typical range. The medical term for hitchhiker’s thumb is distal hyperextensibility. It is also known as Z-shaped ...

Nick is a Features author who's been writing for fellow tech geeks since 2011. While he's mostly focused on phones, he's also thrilled by cameras and audio gear of all shapes and sizes. On weekends, ...

Discover the outer limits of your eyes. Test the limits of your peripheral vision with a homemade version of a protractor. With the help of a friend, you can measure how much you can see out of the ...

Chances are you already need a steel ruler for your fixing and making tasks, so why not use one that can do much more than most? That's the idea behind the ten-function Tiruler, which packs a ...