When you assemble something, it should be tight. That's not surprising. But in this particular case, "firmly" was an understatement. The customer's request was that the cameras must be firmly attached without breaking in heavy winds. At the same time, the camera had to be easy to install. Sometimes at great heights, dangling over a motorway or from a bridge, it should preferably go smoothly for the person who has to tighten the screws.

By incorporating a self-locking system, the camera locks itself in place. A torsion spring ensures that the camera is under tension without jamming it - because what doesn't bend, breaks. The small worm gear motor provides a sturdy solution that won't loosen on its own. A principle that we often find in mechanical engineering but could apply here to a smaller scale.