1. A method of juxtaposing components in an assembly process comprising the steps of: forming a computer model of a mounting component ( 18 ) to be mounted at a target location on a mounting surface ( 12 ) of a base component ( 11 ); providing a system ( 1 ) including a computing means ( 2 ), a camera ( 3 ), and a display means ( 4 ); providing a base component ( 11 ) and a mounting component ( 18 ); determining the position and viewing direction of the camera ( 3 ) relative to the base component ( 11 ); displaying a live image ( 11 ′) on the display means ( 4 ) of the base component as viewed by the camera ( 3 ); displaying on the display means ( 4 ) a mounting component target image ( 18 ″) generated by the computing means ( 2 ) of the mounting component ( 18 ) mounted at the target location on the mounting surface ( 12 ) superimposed over the live image ( 11 ′) of the base component; and moving the mounting component ( 18 ) relative to the base component ( 11 ) such that a live image ( 18 ′) of the mounting component as viewed by the camera ( 3 ) coincides with the mounting component target image ( 18 ″).