HP F310 - Adjusting Device Position and Orientation; Device Position Adjustment Guide

2.2.2 Adjust the device position
1. Loosen the knob to swivel the
device vertically.
2. Loosen the knob to swivel the
device horizontally up to 360°.
3. Then tighten the knobs to make sure the device is securely locked
in place.
Knob
Knob