Original price was: £2,495.00.£1,750.00Current price is: £1,750.00.
Groundtech GR-4 Ground Scanner is a powerful 3D underground scanning device designed to detect buried metals, cavities, tunnels, and archaeological structures with high precision. Built with advanced ground imaging technology, it provides clear scan data to help treasure hunters, archaeologists, and surveyors locate targets faster and more accurately. Ideal for deep ground exploration, the GR-4 delivers reliable performance across different terrains while reducing unnecessary excavation.
A 3D ground scanner earns its money by stopping you digging. You walk a grid, the unit builds a picture of the ground beneath it, and you decide where to open the earth with some idea of what is down there. For cache hunting, building archaeology and assessing a permission before you commit a season to it, that is a different kind of useful from a detector that beeps.
Comparing the range? See all Groundtech scanners, or the professional OKM systems if the project needs more depth than this class provides.
£1,750. The GR-3 below it is £1,300 and the GR-4 Dual above it is £2,249. The Dual adds a pulse induction detector, which saves carrying a second instrument into the field.
It is a ground scanner that detects metal among other things. It will not work like a coil machine for coin hunting. If you want one instrument that does both, the GR-4 Dual at £2,249 pairs the scanner with a pulse induction detector.
Several metres for substantial features such as voids, walls and large metal masses, in cooperative ground. As with every scanner, quoted maximum depths assume large targets in ideal conditions. Small objects do not read at those depths at all.
No, and nothing in this class will. A coin is far too small to register as a ground anomaly. For coins and jewellery a £250 coil machine from our most popular range will find more and weigh less.
Depth and imaging resolution, rising with price. The GR-3 is the cheapest credible route into 3D scanning, the GR-3 Plus adds reach, and the GR-4 is where most buyers land because it is the easiest of the three to get good results from.
The unit runs the scan and shows the result itself. Exporting scans to look at them properly afterwards is useful but is not required to work in the field.
Yes, setup, calibration and a walk through come with every scanner we sell, and we remain available afterwards. Survey technique matters more here than with any detector.
Yes, exactly as with a detector, and scheduled monuments are off limits entirely. See how to get permission.
