Manufacturer and Supplier of the Mdu Probe SystemThe Mdu Probe System is unique – it is the most thorough and accurate non-destructive building investigatory system in the world, with easily understandable reports. At the heart of the system is the Mdu PROBE, a patented diagnostic tool which can obtain reliable moisture readings and an accurate assessment of timber damage without the need to cut through the internal wall lining or exterior cladding.