Layout tool for multiple floor and roof joist in-line through hole drilling

摘要

A layout tool for multiple floor and roof joist in-line through drilling (1A) having a laser mounting and vertical adjustment bracket (3) fastened with a pivot pin (10) to a horizontal adjustment bracket (4) with it fastened by a vertical pivot pin (5) to the clamping bracket (6) that has a threaded clamping tube welded to it. The laser mounting and vertical adjustment bracket (3) has two holes to accommodate upper laser (8) and lower laser (9) to be fastened in them. The laser mounting and vertical adjustment bracket (3) has a threaded hole to accommodate the vertical adjustment screw (1). By tuning the vertical adjustment screw left or right it pivots the laser mounting bracket (3) vertically up or down. The horizontal adjustment bracket (4) has a threaded hole to accommodate the horizontal adjustment screw (2). By turning the horizontal adjustment screw (2) left or right it pivots the laser mounting bracket (3) horizontally left or right. The clamp bracket (6) and threaded clamping tube (7) are securely clamped to floor joist (14) with the clamp washer (12) and the clamp nut (13). The spacer block (11) is attached to the clamping bracket (6) to accommodate the shape of the TJI floor joist (14).