(global positioning system)


At Henry Surveys, we utilize Static GPS survey techniques for control of all of our survey data. Every survey is "tied down" to the Pennsylvania State Plane Coordinate System (NAD83). By doing this, all surveys are referenced to one common coordinate system which allows us to be automatically tied into any previous surveys we have performed in the area without having to physically survey into those points again, saving time and money.

Using GPS technology we can measure over extremely long distances at very high levels of accuracy in a fraction of the time it would take using conventional survey measuring techniques.

We also utilize mapping grade GPS (real-time, sub-meter accuracy) for mapping, navigation and reconnaisance for a variety of survey & mapping applications.