So it’s obviously a clicky type with an internal spring and screw down end that sets the torque. The position of the screw in end sets the calibration, just like the one in the video of the previous post. You just have to work out how to fully remove the screw on end. It was assembled somehow so it must come apart, you just have to figure it out. Sorry I can’t help more as I couldn’t find any assembly diagrams for this model. After you work out how to disassemble the calibration procedure will then be the same as in the video.