Chalk line apparatus

摘要: A chalk line assembly includes a housing formed with cavity therewith to receive powdered chalk, wound within the about central spool. crank handle is directed into effect winding and reeling of relative mounting plate secured rear wall housing, including ferromagnetic member mounted projecting rearwardly plate. The further support aperture therethrough fasteners permitting vertical apparatus ferrous non-ferrous supports in directing line. modification invention fiber optic structure for illumination alignment orthogonally oriented measurement construction environment.