You can measure the distance between two points on your model. When you click the distance label, the Measurement Details window shows the distance, part names, and the X, Y, and Z axis deltas.
To save all active measurements, take a snapshot (or add a pin or markup to automatically take a snapshot). The measurement in each snapshot remains private in your 3D model until you add the snapshot to a Story and share it with others. If you want to enable collaborators to create measurements, you need to open the story and edit the snapshot's settings. Labels indicate which snapshots have measurement enabled.
Vertex Story highlighting a snapshot with labels