Disclosed is a chalk line marking apparatus having an ambidextrous trigger. The trigger has an angled cord cavity channel that directs a marking cord in a downward direction so that the marking cord is flush with a surface to be marked.

Disclosed is a chalk line marking apparatus having an ambidextrous trigger. The trigger has an angled cord cavity channel that directs a marking cord in a downward direction so that the marking cord is flush with a surface to be marked.

Disclosed is a chalk line marking tool that has a trigger attached to a spring loaded marker. The spring loaded marker has a cord gripper channel that holds a chalk covered cord. When the trigger is actuated, the spring loaded marker marks a surface with a chalk line mark.

Disclosed is a chalk line marking tool that has a trigger attached to a spring loaded marker. The spring loaded marker has a cord gripper channel that holds a chalk covered cord. When the trigger is actuated, the spring loaded marker marks a surface with a chalk line mark.

A spool for a chalk box may include a core member extending substantially parallel to an axis of rotation of the spool, a first sidewall disposed in a plane substantially perpendicular to the axis of rotation of the spool at a first end of the core member, and a second sidewall disposed in a plane substantially parallel to the first sidewall at a second end of the core member. The string may be configured to be retained on the spool by being wound onto the core member. The first sidewall may include a first anchorage orifice and a second anchorage orifice spaced apart from each other and each passing through the first sidewall from an inside surface of the first sidewall to an outside surface of the first sidewall. A spool groove may be formed on the outside surface of the first sidewall extending from the first anchorage orifice to the second anchorage orifice.

A spool for a chalk box may include a core member extending substantially parallel to an axis of rotation of the spool, a first sidewall disposed in a plane substantially perpendicular to the axis of rotation of the spool at a first end of the core member, and a second sidewall disposed in a plane substantially parallel to the first sidewall at a second end of the core member. The string may be configured to be retained on the spool by being wound onto the core member. The first sidewall may include a first anchorage orifice and a second anchorage orifice spaced apart from each other and each passing through the first sidewall from an inside surface of the first sidewall to an outside surface of the first sidewall. A spool groove may be formed on the outside surface of the first sidewall extending from the first anchorage orifice to the second anchorage orifice.

A chalk line marking device, including a main body, including a first section disposed on at least a portion of a first end of the main body, and a second section disposed on at least a portion of a second end of the main body, a handle disposed between the first section and the second section to facilitate gripping thereof, and a chalk string disposed within at least a portion of the main body and the handle, and around a first tip of the main body and a second tip of the main body to move the first section and the second section from bent in a first position to at least partially extended in a second position, such that the chalk string creates a chalk line in response to movement of the first section and the second section.

A chalk line marking device, including a main body, including a first section disposed on at least a portion of a first end of the main body, and a second section disposed on at least a portion of a second end of the main body, a handle disposed between the first section and the second section to facilitate gripping thereof, and a chalk string disposed within at least a portion of the main body and the handle, and around a first tip of the main body and a second tip of the main body to move the first section and the second section from bent in a first position to at least partially extended in a second position, such that the chalk string creates a chalk line in response to movement of the first section and the second section.

A string line support for the positioning of a first end of a string line used for height measurement or chalk marking is provided, allowing a single user to secure the first end of a string at a desired position and extend the string line to a taught positioning for such height or other linear measurements. The string line is engaged at the first end to a connector clip which is removably positionable in a slot upon a housing that is positionable upon a member.

A string line support for the positioning of a first end of a string line used for height measurement or chalk marking is provided, allowing a single user to secure the first end of a string at a desired position and extend the string line to a taught positioning for such height or other linear measurements. The string line is engaged at the first end to a connector clip which is removably positionable in a slot upon a housing that is positionable upon a member.