1. A device providing a graphic user interface for a three dimensional (3D) board inspection apparatus comprising: an actual measurement image display area in which a 3D actual measurement image of an inspection target is displayed based on 3D actual measurement data for the inspection target on a board; and a dimension information display area in which dimension information of the inspection target is displayed based on the 3D actual measurement data for the inspection target and reference dimension information of the inspection target previously stored in the board inspection apparatus, wherein a first contour line of the inspection target based on the reference dimension information and a second contour line of the inspection target based on the 3D actual measurement data is displayed with overlapping the 3D actual measurement image of the inspection target in the actual measurement image display area, and wherein the dimension information display area includes a recommended dimension display area for displaying recommended dimension information of the inspection target, and the recommended dimension information is updated according to a specific input.