4-hole inline plate from the RigMetal Flagship Sim Cockpit. The plate is 10mm thick, with 40mm of spacing between holes. The plate has three M8 countersunk holes and one M8 through hole. This is useful to add 10mm of offset.
I'm using the 4-hole inline plate to support a 700mm 4080 extrusion running parallel to the base frame, and a little lower than the seat on the left-hand side to mount HOTAS throttle and button box. As always, solid construction and unyielding hold!