Review on 🌀 Diameter Bubble Spirit Circle Circular: Unleash Blissful Serenity and Harmony by Paul Lee

The spirit level was sufficient for my purposes. A friend stated that he could not keep the drill bit level for drilling. So I glued a bubble level to the back end of the drill and one on top. This allowed him to orient the drill in two directions, improving the position of the holes and screws. I've leveled up three of my exercises and one other friend and they're all happy.