The QMS 70U-172 is used for a similar field of application as the QMS 70U-170. Due to its smaller gap, the QMS 70U-172 is even more sensitive and is capable to detect foils and fleece materials.
A key switch allows the operator to easily switch between two levels of sensitivity, fleece and foil.
An even higher level of sensitivity offers the nearly identically designed version of the QMS 70U-172, the QMS 70U-172-2. The QMS 70U-172-2 has also a key switch and is capable to measure foils and very thin foils.