With this bracket you can turn a crack monitor TT1 (wall) (Rissmonitor TT1 (Wand)) into a crack monitor TT3 (ceiling/floor) (Rissmonitor TT3 (Decke/Boden)) or a crack monitor TT2 (corner) (Rissmonitor TT2 (Ecke)).
It also fits the crack monitor TT1 Plus if you want to use it for the ceiling, the floor or in a corner.