I bought the lock n level for my 8m twin axle caravan as I wanted something that was hassle free to use. This is a fantastic piece of kit! I used this at Glenbrittle (Isle of Skye) and it lifted my caravan 5 inches without any fuss.
…….When I arrive at a campsite I’m not (within reason) concerned about how level it is as the lock n level is so easy to use.
I bought myself a cheap compresser from Halfords that will stop if the maximum pressure is reached (30psi); this way I’m watching the spirit level in the caravan when the caravan in raising, so far I haven’t needed to exceed 20psi pressure. The caravan is just as stable as when it isn’t raised as I thought it would wobble when you walk inside the caravan. I have quite a few photos showing how good the lock n level was, these were taken on location and my slopping drive at home, and I’m willing to share these if anyone is in any doubt how good this product is.