Download the free SketchUp Viewer for Mobile to view and measure your models right on your phone or tablet.
Android: https://play.google.com/store/apps/details?id=com.trimble.buildings.sketchup&hl=en_US
iPhone: https://apps.apple.com/us/app/sketchup-viewer/id796352563
In this video I go over all of the features in the app, and talk about the premium AR feature that comes with SketchUp Shop & SketchUp Pro Subscription.