04/13/2019. There was a serious issue with a neighbor that was disrupting all neighbors within 500 feet in a residential area. This tool provided useful metrics to persuade local city governments to take action and solve problems. Worth the cost. I've searched extensively for a reliable device that can record readings and of the two under $800 devices on the market this was the best. Very happy with the performance and ease of use. Comes with a hard carrying case, but I also bought a soft carrying case and calibrator. Without a calibrator, you have no evidence to convince the authorities that the statement is reliable and they will not accept it.