Method of fabricating a thin-film transistor in which a gate metal is deposited onto a substrate in order to form the gate of the thin-film transistor. The apparatus comprises a database containing map information, a display for presenting the map information, a user controlled cursor and selection buttons, all under the control of a graphics processor. The actuating member includes a curving slot and is pivotally coupled to the movable fastener via a pivot. The concave portion is arranged to communicate with a clearance defined between a sleeve of the spool valve and the valve body, and the orifice is opened in a bottom part of the concave portion.