GPS Setting Out The use of a Global Positioning System (GPS) allows accurate navigation, positioning of objects and recording of features within an archaeological context. The instrument uses a series of satellites and base stations to provide an accurate location anywhere in the world. The GPS is a flexible tool giving sub-metre precision over a wide area, making it ideal for placing markers within a landscape or mapping existing features. Archaeological uses for this technology include: Setting out of pre-designed test trenches, test pits and area excavations Setting out of road / pipe corridors and associated Compulsory Purchase Order boundaries Surveying the location of field boundaries, pylons or buildings which may impact on test trenching Site grid setting out and/or mapping Mapping test trenches, test pits and open excavations Mapping extensive archaeological features in the field Natural and built heritage management mapping When combined with Computer Aided Design (CAD) software GPS-derived data provides a powerful archaeological tool for recording ancient monuments, features and trenches, in the Irish National Grid. This service can also be integrated with a Geographical Information System (GIS) and other archaeological applications, allowing for the highly accurate investigation of archaeological features. Features marked on early Ordnance Survey maps and geophysical anomalies (often invisible on the surface) can be transferred onto the GPS and marked in the field, while features revealed during test trenching can be relocated for further study. Contact Details Earthsound Archaeological Geophysics Prospect House Drumagh Claremorris County Mayo Ireland Tel: +353 (0) 94 936 2228 | Archaeological Geophysics & Geochemistry | Geological Surveys | Environmental Surveys | Topographical Surveys | GPS Setting Out | Waterborne Surveys | Cultural Resource Management | Digital Graphics | Research & Development | Publications & Presentations | Education & Training | Project Management |