Does the Pan-Tilt head have a locking mechanism for the lateral plan

Q: Does the Pan-Tilt head have a locking mechanism for the lateral plan?

MSM: Yes, the MSM Pan-Tilt head has a locking knob for the lateral movement. There is a panorama base at the bottom of the pan-tilt head. You could adjust your lateral angle and lock it in any direction you wanted.

If you are interested, please check here: move shoot move pan-tilt head