Plumb line for controlling or determining a vertical and/or horizontal run along a surface or edge has a weight with a conical tip on a cord, a hollow body with a light source fed by a battery and vertical and/or horizontal marker grooves.

摘要

A weight (2) fastened to a cord (S) has a conical tip (4) for controlling or determining a vertical run along a surface or edge. The weight has a hollow body (9) fitted with a source of light (10) fed by a battery (11). It also has marker grooves (12) running vertically and/or horizontally on the periphery.