the lateral force on the tool and or the bit 50 created this way can be sufficient to provide steering of down hole drilling systems the hydraulic lateral force can be achieved by using a design that is similar to the current bias or steering unit design but which has a plurality of lateral orifices 40 one of which is shown via this cross sectional view and another is represented via dashed lines instead of the current pad piston assembly the lateral orifice 40 exit area needs to be sufficiently close to the borehole wall or face 100 to ensure a sufficiently small gap h between the lateral edge of the tool body 10 where the side orifice 40 is located and the borehole 100 in order to provide enough pressure differential around the tool in the tool borehole annulus 110 the lateral force can also be achieved with lateral orifices 40 placed in the hole gauge 10 next to the drill bit 50 itself where a smaller gap h between the tool 50 and the borehole 110 is easier to maintain during drilling the smaller the gap the bigger the hydraulic side force as the entire drilling bha is rotated during drilling including the lateral orifices one or more lateral orifices are open only when they are approximately opposite to the desired change in drilling direction while all.