Construction layout block

摘要

Construction layout block can be provided with a triangularly shaped body with a triangular bottom; a base wall and two side walls extending up from the bottom; base wall junctures formed about intersections of the base wall and the side walls, and an apex juncture formed about intersections of the side walls. It may have one or more of an artifice capable of holding a chalk line; top, with a top carrying handle; a laser target notch; a rear reference system; a top alignment system; a ruler scale; an intrinsic level; and a contrivance for holding a tape measure by its distal end. The block has relative immovability, in general, to resist the force of pulling on a chalk line with the same attached to the block during layout. A construction layout block of any shape may be plastic-coated.