Note: This step should only be performed if the size needs adjusting.
Remove the screws
With the NavVis VLX in the box, remove the two screws with the torque wrench provided.
Adjust the size
Slide the belt hook to the correct size. The device can be adjusted to the following height sizes: XS (Extra Small), S (Small), M (Medium), L (Large), and XL (Extra Large).
Tighten the screws
Install the two screws with the torque wrench provided. Keep turning until you hear a sharp click.