double plumbing of a single shaft, two-weight shaft plumbing, plumbing equipment, bath, bathroom equipment, wash basin, piping, plumbing, plumb line position, plumb position, commercial plumbing, industrial plumbing, plumb-line, plumb, take the plumb, test the plumb, pipe, pipe connector, taps, valve, fitting (plumbing)(GEMET), ground nadir point, ground plumb point, plumb point, plumb line, plumb bob, plumb, lead (1), sounding lead (2), plumb (3), plummet (4), sounder (5) -*- installation sanitaire, baignoire, lavabo, matériel de plomberie, conduite (1), tuyauterie (2), position verticale, installations sanitaires collectives, descendre un aplomb, tuyauterie, raccord de tuyauterie, robinetterie, tuyau, vanne, nadir du terrain, fil à plomb, aplomb, aplombs, perpendiculaire