Los Angeles-based studio Ensso has designed an all-in-one fountain pen with scale ruler for architects and engineers. Launched on Kickstarter, the Escala pen has a long, triangular cap that doubles as ...

A Golomb ruler is very different from your run-of-the-mill tape measure. These strange rulers are defined in terms of constraints, and are “optimized” when they are the shortest they can be. While not ...