Video 1. It is important to install the scale onto the front bar and not the back bar. The on button of the scale should face the same direction as the connector on the front bar.  2. Slide the scale through the bar and push it through the bent section of the front bar. For some LEVER models this will be easier than others. 3. Position scale to desired placement to mirror the right cube  4. To secure the scale on the front bar, tighten the screws with the allen keys.