Our GPS/Geodetic Services include:

Our field crews have experience using the latest GPS equipment to obtain both horizontal and vertical control.  When GPS vertical control is not acceptable for our projects, a level run using an electronic or conventional level is used to ensure that the maximum amount of accuracy will be attained for the project.

Our horizontal and vertical control accuracies typically exceed the project requirements. We generally use National Geodetic Vertical Datum of 1929 (NGVD 29) or North American Vertical Datum of 1988 (NAVD 88) for our vertical control.  

Our horizontal control experience includes using both North American Datum 1927 (NAD27) and North American Datum 1983 (NAD 83).  The horizontal control we are currently using is the NAD 1983/90 adjustments or NAD 1983/99 , which coincides with the current published control datums.




Clary & Associates, Inc. offers our clients a wide range of survey services utilizing GPS technology. With our experienced office and field staff we provide our clients with solutions to meet their project needs.

From high-accuracy horizontal and vertical control networks to GIS data collection, we hold ourselves to the highest standards of our profession.

By keeping current with the latest technological advances in Global Positioning System (GPS) equipment and information management software, we insure 100% reliability of data throughout the life of a project.





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