Ratchet mechanism and switch from right to left operation. Automatic short release: Clearly audible and noticeable click signal upon reaching the preset torque. Calibrated and tested piece by piece, with a test certificate. Practical release mechanism: The attachment is securely in place and releases automatically at the push of a button. Clearly readable analog display for the preset torque. Ergonomic handle that is automatically gripped in the center due to its shape, which is important for precise triggering. Additional micro-scale for fine adjustment. Simple presetting of the torque by turning the knurled ring, with the position then fixed by an insert ring.