Abstract: Distance piece, preferably for the manufacture of hollow or laminated walls, with at least three rods that are connected to each other, and where each rod has at least one supporting section, and the supporting sections of the three rods are spaced apart from each other to thus form a supporting plane.

Abstract: The invention relates to a formwork system with a formwork support preferably for supporting at least one formwork piece, and a magnet device, movably coupled to the formwork support, for fixing the position of the formwork support on a formwork base, wherein the magnet device has a magnet member, which can be transferred between a raised position, in which the formwork support can be moved together with the magnet device relative to the formwork base, and a lowered position in which the formwork system is magnetically fixed relative to the formwork base. Advantageously, with the present invention the magnet device for transferring the magnet member between the raised position and the lowered position is movable relative to the formwork support.

Abstract: The invention relates to a holding device, preferably a shell device, which comprises a magnet that can be transferred from a locking position, in which the magnet is preferably operatively connected to a magnetizable shell support so as to magnetically act upon it, to a detach position in which the magnet is spaced apart from the shell support. The aim of the invention is to simplify a holding device of the above-described kind. The magnet, for the purpose of transferring it from the locking position to the detach position, is mounted so as to be rotatable about a swiveling axis in such a manner that in the detach position it is disposed so as to be swivelable via-à-vis the locking position.