 The Karlsruhe Trichium Neutrino-Katrin experiment aims to determine the absolute neutrino mass scale with a sensitivity of 200 miV, 90% confidence level, by measuring the electron energy spectrum close to the endpoint of molecular trichium-beta decay, using a large volume air-coil system surrounding the vessel to adjust and fine-tune the magnetic guiding field and compensate for Earth's magnetic field. This article was authored by Fierinck Gluck, Guido Drexlin, Benjamin Leiber, and others.