Three-point internal rapid action switch
High-precision internal measurements on drill holes
Feinmess Suhl has expanded its product range with the new 8480 three-point internal rapid probe. The probe has been specially developed for high-precision internal measurement of through and blind bores.
Its ergonomic handle unit, in combination with the mechanics in the probe head, enables highly accurate, reproducible measurements without backlash. Measurements in bores can be taken within a short time and at different positions. The probe has three titanium-coated measuring surfaces, which are arranged at a 120° angle to each other. The measurement is carried out by lifting the measuring surfaces using a lever.
The probe is equipped with a preset spring element that guarantees a defined measuring force. It also has a holder to which commercially available analog and digital dial gauges or precision indicators can be connected. The measuring accuracy is ±2 µm.








