I have a two story home with a walk-out basement, meaning the ground along both sides of my home are sloped. I have been installing gutter guards, and this device has been a god-send. It is so much more stable -and I feel safer- than using a piece of wood to level the ladder. It is easy to operate and adjust as needed. I use this on a 28' extension ladder and have been completely impressed with how it works. It is a bit pricy and I was a bit worried when I bought it, but so far it has been worth the money.