Tool for tracing horizontal lines on curved surfaces

A tool for tracing horizontal lines on curved surfaces having a method of use consisting in the steps of:

• a user leans the tool against a curved wall;
• insures that a bottom level is leveled;
• using a top level connected to the bottom level by way of a bracket configured so that it can receive both the top level and the bottom level in a perpendicular relationship to each other by way of a bracket which is fixedly attached to the bottom level and slidingly attached to the top level by way of a sliding groove, the user puts the top level leveled and pushes the top level while keeping both the top level and the bottom level leveled until a resiliently deformable ruler is resiliently deformed by the top level pushing against the ruler
• the ruler is attached to the top level by way of a pushing means and has its extremities retained by way of retainers so as to be deformed so as to create a bow shape that conforms to the curvature by touching the curved wall entirely;
• a wingnut tightens the top level at a given position within the slider and relative to the bottom level.