A tool for locating a sole plate parallel to and a preselected distance from a foundation edge for marking locations for anchor stud bolt holes is then used for locating the holes in the sole plate to accept the studs set vertically in the foundation between the temporary location of the plate and the foundation edge. The tool is, preferably, made of a single plate shaped to have a rectangular rule port ion with a narrowed neck extending to a right angle bend to provide an index surface, with a wider hook head extending at a right angle from the index surface, away from and parallel to the hook portion. The hook head has arcuate notches on each side arranged such that the center of radius coincides with the plane of the index surface and a line extending along each edge of the rule portion. Alternatively, the neck is eliminated and the rule portion has two right angle bends to place a hook head in a plane parallel to the plane of the rule portion, the two planes separated about the dimension of a sole plate thickness with the arcuate notches opening toward the rule portion, the centers of radius coinciding with edge lines of the rule portion and a surface on the hook head serving as the index surface. In both options a bolt hole locator notch is situated in the edge of the rule portion to temporarily locate the sole plate from the edge of the foundation and then to locate the hole to be drilled when an arcuate notch engages a bolt while the tool is perpendicular to the sole plate. In use, the studs normally extend upward past the rule portion and are cleared by the narrow neck or equivalent clearance notches in the rule portion.
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