Abstract: An apparatus for treating human skin includes an outer housing including a graspable portion and an applicator head engagement structure. The apparatus includes an image capture device that captures images of the human skin through an opening in the applicator head. A processor analyzes the images of the human skin to identify skin deviations. A cartridge includes a nozzle located in the applicator head. The applicator head includes an outer housing engagement structure that engages the applicator head engagement structure with the cartridge inserted into the outer housing to inhibit removal of the cartridge from the outer housing. A cap engages the applicator head. The cap has a locked configuration connected to the applicator head where the applicator head is removable from the outer housing and an unlocked configuration connected to the applicator head where removal of the applicator head from the outer housing is inhibited.

Abstract: The invention relates to a force and angle sensor for measuring the angle of rotation of a shaft (3) and a force exerted on a torsion rod (303), which interconnects two shaft parts (32, 33) of the shaft (3). In a housing (2), through which the shaft (3) runs, are arranged a main circuit board (4) arranged non-rotatably in relation to the housing (2) and which has a central opening (12), through which the shaft (3) runs, a first circuit board (5) for measuring the angle of rotation arranged non-rotatably on a first shaft part (32) on one side of the main circuit board (4), said first circuit board having a central opening (51) through which the first shaft part (32) runs, and a second circuit board (6) for measuring the force connected non-rotatably to the other shaft part (33) on the other side of the main circuit board (4), said second circuit board having a central opening (51) through which the other shaft part (33) runs.

Abstract: The invention relates to a force and angle sensor for measuring the angle of rotation of a shaft (3) and a force exerted on a torsion rod (303), which interconnects two shaft parts (32, 33) of the shaft (3). In a housing (2), through which the shaft (3) runs, are arranged a main circuit board (4) arranged non-rotatably in relation to the housing (2) and which has a central opening (12), through which the shaft (3) runs, a first circuit board (5) for measuring the angle of rotation arranged non-rotatably on a first shaft part (32) on one side of the main circuit board (4), said first circuit board having a central opening (51) through which the first shaft part (32) runs, and a second circuit board (6) for measuring the force connected non-rotatably to the other shaft part (33) on the other side of the main circuit board (4), said second circuit board having a central opening (51) through which the other shaft part (33) runs.