Gizmodo

In two dimensions, it’s the Reuleaux triangle: an equilateral triangle with curved arcs connecting each corner, creating a shape with a constant width but a smaller area than a circle. Now, a team of mathematicians say they’ve scaled up the shape into the third dimension and beyond, finding it resolves a math problem…

Gizmodo

It’s scientifically impossible to use a tape measure to just measure something. It’s the workshop tool of 1,000 other useless uses, including lightsabers, or seeing how far it can extend before the tape collapses.