https://newatlas.com/arrim-one-laser-measurer/55001/

Just when we thought tapeless tape measures would be the year's pinnacle of innovation in measuring devices, along comes a breakthrough that more or less gets rid of the measure to boot. The Arrim One purports to be the world's first "professional" Augmented Reality measuring device – a small laser emitter which connects to a smartphone to size up straight lines, circles and angles, and shows those measurements in your AR view of the world. A Kickstarter to fund the project is hurtling towards its US$20,000 target.