Device for measuring wear in disc cutters, especially on tunnel drilling machines, has a magnet in the wearing layer at the circumference of the disc and a sensor for measuring the magnetic field strength
Device for measuring wear in disc cutters, especially on tunnel drilling machines, has a magnet in the wearing layer at the circumference of the disc and a sensor for measuring the magnetic field strength
A roof window system comprising a ventilation assembly with an exhaust device and method of operating a ventilation assembly of such a roof window system