It is said that a long time ago, carpenters would make marks on their workbenches to indicate measurements and they would then use these measurements as references. Throughout time, benchmarks came to signify reference points for measuring something. As an example, the J32 benchmark that we see in the above picture, is a geodetic benchmark to indicate a reference point that was used in measuring the curvature of a part of Earth's surface. What are our benchmarks in ATC? Do we have any? Do we need benchmarks?
