through but the machine screw serves to position the rack and pinion assembly inside the door 200 two cutouts 238 fig5 are provided to accommodate different styles of handle assemblies which may have different spacing of their mounting screws fig1 and 12 illustrate yet another embodiment of the present invention as illustrated in fig1 and 12 the exterior grip assembly 258 includes an integral rack and pinion assembly which performs the same function as the separate rack and pinion assembly e g 80 in fig4 in the prior embodiments thus the chief structural difference between the rack and pinion assembly 80 and the rack and pinion used in the fig1 and 12 embodiment is that the exterior escutcheon 264 supports the various pinons and the rack while in the previously described embodiments the rack and pinions were supported in a separate housing integrating the rack and pinions into the exterior escutcheon makes installation of the exterior grip assembly 258 a simple matter not different from a prior art exterior grip assembly in which the tumbler assembly is coaxial with e g the tang 38 of the interior grip assembly 14 of fig4 to this end the exterior grip assembly 250 is provided with conventional internally threaded posts 260 which receive machine screws not shown inserted through the door from its interior side the exterior grip assembly 258 includes an exterior grip 262 which is mounted to.