Bean field for the determination of curvature lines
Model 212
Description
Bean field for the determination of curvature lines, asymptote lines and parabolic curves
Showcase of this model is Case number 42
References
Schilling, Martin(Hrg.): Catalog mathematischer Modelle, Leipzig(Verlag von Martin Schilling) 1911, 7.Auflage, No.194. p. 139.