You can use the Precision Test model on the HoloLens to set out and measure discrepancies between corner points of a unit grid (1m or 3ft) and evaluate precision within your work space. Results will be affected by both holographic drift caused by non-optimal environmental conditions together with the accuracy of Marker locations used to correct for this drift.
Precision Test Models (GDrive): https://drive.google.com/drive/folders/1IFLylHlP236nuX-kPtKhguprP-ZincWZ?usp=sharing
Twinbuild
You can drag and drop the GLB file to https://app.twinbuild.com begin the publishing process. Click Sign In and use a Google account or email and password to create an account to associate with your models. This allows you to easily view or delete any models you have previously published to Twinbuild. After completing sign in, click Upload to publish the model to the cloud.