These samples can be used to determine moisture values that are in the sub-range of a dry surface, such as. B. under carpets, parquet or hard materials.
The insulated measuring needles are of small diameter, on the one hand to be able to drive the needles through the surface materials, and on the other hand to leave little damage to the upper material. The sandblasted needles are made of hardened steel to prevent bending and to provide a secure connection surface for the abrasion-resistant insulation layer. So if the needles are driven through a wall, the measured value is not falsified by the penetrated dry wall.
