When designing a linear motion system with a screw jack, it is important to include controls to stop the jack at its fully extended and retracted positions. This is especially true for motorized applications, where the power of the motor could potentially cause serious damage if not controlled properly. While standard jacks are not provided with internal stops, Thomson offers a few different options to automatically limit the stroke of the jack. Our tube sensor system can provide a simple solution for designers needing precise and reliable end of travel positioning.