Construction laser with inclinable turning means

The laser has a tilt part (6) arranged in a housing and a laser unit arranged in the tilt part. A deflecting unit deflects a laser beam generated by the laser unit. An actuating drive adjusts the part relative to the housing and has a piezo actuator (7a). A control electronics controls the drive, and a flexible elastic unit seals the housing relative to the part, where the elastic unit is formed of a set of folds.