We keep more than one system running, even as we work our machines are logging our surveyors work automatically into log files, this aside from the individual jobs AND programs on the machines which run their own QA logging systems Our teams have access to and skills for both GPS (Global Positioning System) or TPS where required We only use Leica products, this alone is a tall order considering they are 3 times the price of the equipment most our competitors use For your average human being that is actually quite a tall order, as a species we were born to make mistakes, indeed we have evolved through the process of making mistakes