Sliding camera plate with metric ruler compatible with Manfrotto fluid video heads: MVH400AH, MVH502AH, MVH502A, 504HD, 509HD, MVHN8AH and MVHN12AH. Supplied with 2 x 1/4" camera screws and 2 x 1/4’" to 3/8" screw thread adapters and 2 x anti-rotation pins.