The Haoge HQR-120 universal quick release long plate is an Arca-type compatible multi-purpose rail with a laser-engraved reference scale with 1mm increments on both sides.
It allowing for easy nodal point adjustments. There are four holes at the ends of the plate for DIY L Plate by two HQR-120 or building other support systems.
Dual dovetail design, both sides can be mounted equipments.
Compatible with a variety of digital cameras.
Two safety stop screws in both side to prevent drop of camera by accident.