This Manfrotto 454 Micrometric Positioning Sliding Plate allows extremely precise positioning movements for the perfectly framed shot. It is ideal for QTVR and other precise copy/ repro work. It has finger-tip control for hairsbreadth positioning, but with a simple lock-release lever for fast set-up. Two plates can be interlocked at 90 degrees for full lateral/ forward/ /back movement (over 120mm). In extruded aluminum, the plate has 1/4-Inch and 3/8-Inch holes and screws for tripod and camera mounting.