Patent ID: 7284334

Claim:
A geometrical layout method for locating a plurality of target points spaced apart over a particular first area from a single reference point located within the first area, comprising the steps of: creating intersecting lines which intersect at the reference point; placing over the intersecting lines a target control template having a periphery with indicia thereon at set intervals which are in overlying registration respectively with the intersecting lines, and a central opening directly over the intersection of said intersecting lines; inserting a center anchoring pin down into the underlying central opening in the template to hold the template against movement with respect to the intersecting lines; turning the target line indictor about the center anchoring pin to align the window opening with a selected one of the target points; using the center anchoring pin as the locus from which to determine the direction and distance of the selected target point from the reference point and making radial direction marks on the template for each target point; placing the template on a second area parallel with and spaced apart from the first area such that the location of the central opening in the template on the second area registers with the location of the central opening in the template on the first area and using the direction marks to determine the directions of target points on the second area corresponding to the directions of the target points on the first area; and measuring the distance of each target point on the second area using distance determinations for corresponding target points on the first area and marking the location of the corresponding and registering target points on the second area.