How to use the augmented reality Measure app in iOS 12
With iOS 12, Apple is expanding it’s Augmented Reality capabilities with ARKit 2, and has built-in a new utility app called Measure to show what Augmented Reality can do. It’s a simple app that reliably measures linear distances, and obsoletes some of those early, simple AR measuring apps.
You’ll need an iPhone 6s or later, an iPad Pro, or a 2017 or later iPad.
The best way to improve the accuracy of Measure is to start off in a well-lit area. Make sure there’s plenty of light before you open the app and go through the process of moving it around to orient it. Measure also works best when you place points at areas of high contrast or sharp corners.
Finally, remember that Measure is meant to give you a sort of ballpark figure.
See the full story here: https://www.macworld.com/article/3304290/iphone-ipad/how-to-use-the-augmented-reality-measure-app-in-ios-12.html