HU4 Knob Guard

This anodized aluminum focus knob guard for the Preston HU4 handset attaches right onto the back of the hand unit, allowing you to place the handset down on a surface without bumping the knob position and changing the focus. The guard also improves holding ergonomics for your right hand. If you are using the pre-printed focus rings, it also protects these against chipping and wear and tear.

Two 4-40 screws are included. Simply remove the two corresponding screws from your handset and install the guard with the provided screws.