A device for edifier a construction of vertical

摘要

At each re-entrant or salient angle in the walls, there is provided a dihedron formed of two angle sections 1 joined at right angles, the vertical sides 1a of which are contiguous and the small horizontal sides 1b of which are fixed to supports 2, 3 housed by leaf metal sleeves 14 nailed into the masonry, the edge of the dihedron acting as guide and support for a non-extensible line 11 which delineates the outlines of the construction to be built and marks the openings to be left free by means of lockable sliders 12. IMAGE