Signal probing systems are provided. A razor includes an extended handle, a head connected to the handle for shaving a desired area, and an applicator. In a longitudinal edge region of the knitted fabric there is arranged on both sides of the seating region always an additional strip-shaped edge section of zone, having the greatest elastic deformability. The long-exposure frame and the short-exposure frame are combined into a combined image while correcting for motion estimated to have occurred between the long-exposure frame and the short-exposure frame, and the combined image is stored. A crankshaft of the engine is generally aligned and offset for a pump shaft of the centrifugal pump.