This NeoRuler smart digital ruler features an LCD display and smartphone ... by just placing it onto the surface you want to measure, selecting a scale from 93 options, and dragging the slider ...

There are a number of ways to do this, everything from computer vision to using a ruler, but [Raivis] chose a much more educational method. He built a digital scale from scratch out of a strain ...

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 ...