model_size Aussendurchmesser 17.5 cm, Lochdurchmesser 6 cm, Höhe 6 cm
model_objectnum ETHZ-MATH-MOD-0001
model_from :
nav_classification
Torus with geodesic and asymptotic curves
A torus with geodesic curves (geodesic curvature equals zero) of different types and two asymptotic curves (normal curvature equals zero).