The Johnson Level Tool we purchased for our industrial and scientific needs has been a lifesaver. Based on our own experience this device has provided us with precision measurements every time .the pros of this tool are how durable it is, withstanding our daily use and frequent drops. The laser level is also spot on and saves so much time. The only con is Its price point is a little high, but it`s worth every penny. Would highly recommend for professionals in need of a high-quality dimensional measuring tool..