The kit, named.
You are paying for the instrument, the person reading it and the software that writes it up. This is the instrument list.
Every instrument we run
Figures are the manufacturers' published data as of 16 October 2026.
| Instrument | Used for | Maker's figures |
|---|---|---|
| Hilti PS 1000 X-Scan | Live imaging of rebar, tendons, conduit and voids before drilling | Detection to 300 mm in dry concrete. Depth accuracy ±10 mm under 100 mm, ±15% beyond. Localisation ±10 mm. Rebar, tendons, metal and plastic conduit, fibre, voids, timber. |
| Hilti PS 300 Ferroscan | Cover depth, bar spacing, bar size estimation | Detection to 200 mm. Localisation 1% ±3 mm. Separates bars 30 mm apart. |
| Proceq GP8100 | Large slabs, decks, post-tension floors | Six-channel stepped-frequency GPR, 400 to 4,000 MHz, to 80 cm. DXF export. |
| Proceq GP8000 | Thick walls, slabs, tunnels, pavements | Stepped-frequency GPR, 200 to 4,000 MHz, to 150 cm. |
| Proceq GP8800 | Corners, risers, tight spaces | Stepped-frequency GPR, 400 to 6,000 MHz, to 65 cm. |
| Proceq GS8000 | Utility detection to PAS 128:2022 | Stepped-frequency GPR, 40 to 3,440 MHz. Built-in multi-band GNSS, network RTK, typically 1 to 5 cm. DXF, SHP, KML, SEG-Y. |
| Radiodetection RD8200 | Electromagnetic utility location, passive and active | Depth readout to 30 m for cables and pipes. Depth accuracy ±3%. 21 fixed active frequencies. IP65. 1.8 kg with the Li-Ion pack. |
| Leica BLK360 G2 | Static laser scanning for as-built capture, tripod-mounted | Range 0.5 to 45 m. 680,000 points per second. Full-dome scan with spherical images in 20 seconds. |
| Leica BLK2GO | Handheld SLAM scanning of large or complex interiors | Up to 420,000 points per second. 775 g with battery. 45 minutes of continuous scanning. 12 MP detail camera. |
| Matterport Pro3 | Fast 3D capture and walkthrough models of interiors | Accuracy ±20 mm at 10 m. 100,000 points per second. Under 20 seconds per scan. Indoors and out. |
Site conditions affect performance. Detection depth in particular falls in wet, clay-rich or heavily reinforced material.
Reporting
Marks on the slab before we leave, with a signed one-page site record and photos. Written report and CAD plan within 5 working days. Sooner when the programme needs it; say so when you book. Every report is signed by the surveyor who did the work.
- Annotated PDF report
- DXF / DWG plans for CAD use
- On-slab markings with photographs
- Method statement and calibration record
Corvus Insights
Our own software reads the scan data from the instruments above, flags likely targets and builds the report. The surveyor confirms every target and signs.
About Corvus InsightsReady to see what's beneath the surface?
Tell us what you're working on. We call back the same working day with a method and a date in the diary.