Improved rule for fitting profiles, supporting prefabricated panels with the view of producing various ceilings or substructures

摘要

The improved rule is noteworthy in that it has, on at least the upper edge of the element or elements 9-10 forming it, a T-shaped groove 9.2-10.2 forming a guiding and translation track for the predetermined and adjusted positioning of added means 11 allowing the centring, guiding and holding of the profiles 2 supporting the prefabricated panels or boards. <IMAGE>