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Drainage glossary · Surveys and diagnostics

Sonde

A transmitter built into a survey camera head that emits a signal, allowing its position and depth to be traced from the surface with a locator.

What it means for you

This is what turns a video of a defect into a mark on the ground, which is what a repair actually needs.

Not sure whether this applies to your property? Ask us. There is no call-out charge and the price is fixed before any work starts.

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