This is the REVO® SFA3 0.4 ST Artefact #A-5764-0062. There are three SFA plates. Each one is supplied with screws for fixing to a single or triple SFAH artefact holder.  The SFP2 gain is set using the SFA1 – 3.0 SIN fitted to the appropriate artefact holder accessory.  It must be mounted on Renishaw’s MRS and MRS2 rack systems.