Imihlobiso ye-elk yeKrisimesi yimihombiso yomthi wekrismesi eyenziwe ngesandla kwisithethe sakudala kunye neendlela ezilungelelaniswe kwi-1800s. Unokuqiniseka ukuba uthenge imihlobiso yekrismesi kwifektri yethu kwaye siya kukunika inkonzo engcono emva kokuthengisa. kunye nokuhanjiswa ngexesha.