MAY JLC 1997 Many tradesmen fall into the trap of thinking they can't do good work unless they buy all the latest gadgets. Fancy tools can make work go faster, but they don't guarantee it ' ll come out right. I didn't have many tools when I built my first house, but the houses I built early on turned out pretty well. Sixteen years later I own just about every carpentry tool ever invented. But if the houses I built with them were better than those early efforts, it's because I knew more about building, not because I had more tools. Checking Levels for Accuracy Knowing the principles behind the way a spirit level works is a