The measuring tool is a virtual measuring tape. You can use it to quickly check clearances, elevations or room sizes.
To start measuring:
Open your VR menu by clicking "Create".
Click the "Start Measuring" button.
Point to model and press the trigger once to place the first measurement point.
Point to a different part of the model. As you move the cursor you'll see the measurement readout both in the menu and on the measurement itself.
Press the trigger again to place the second measurement point.
To clear the measurement and start measuring again, just click anywhere in the model while the measurement menu is open.
You can snap the ends of the measurement to the corners of your model's geometry, indicated by a white circle that appears above the snapped corner.
This allows you to make exact measurements from corner to corner.
You'll notice that a measurement not only shows you the distance between two points, but also the distance along the model's X, Y and Z axis.
This makes it very easy to measure the exact vertical distance by looking at the Z value.
If the geometry in your model is axis aligned, the X and Y axis' allow you to measure the exact horizontal distance between objects.
Click the cogwheel in the top right top access the measurement options menu. Here you can choose change the measurement unit from imperial to metric, hide the axis measurements, or to prevent the measurement from snapping to corners.
Elevation, Area and Volume
Next to the axis readout in your menu, you can also see the elevation of start and end-point of your measurement, which will correspond to the elevation in your original BIM file.
When measuring on a flat surface, a surface area is also shown in the menu, indicating the area within the highlighted axis'.
When measuring between two points in space, a volume is shown in the menu corresponding to the volume of a box defined by the three measurement axis'. You can use this to measure the volume of a room by measuring opposing corners of a room.