Göttingen Collection of Mathematical Models and Instruments

This category is about lines of curvature, asymptote lines, geodetic lines, and in nase of models 211, 220, parablolic curves on surfaces.

	(31) Triaxial ellipsoid with main ellipses		(32) Oblate rotation ellipsoids with a geodetic line
	(33) Oblate rotation ellipsoids with a geodetical line		(34) Prolonged rotation ellipsoid with a geodetic line
	(35) Triaxial ellipsoid with geodetic lines and its envelops		(36) Three single-leaf rotation hyperboloids with different types of geodetic lines
	(201) Rotational surfaces, asymptote lines		(202) Rotational surfaces, asymptote lines
	(203) Rotational areas, asymptote lines		(204) Rotational surfaces, asymptote lines
	(205) Rotational surfaces, asymptote lines		(206) Rotational surfaces, asymptote lines
	(207) Rotational surfeaces, asymptote lines		(208) Rotational surfaces, asymptote lines
	(209) Rotational surfaces, asymptote lines		(210) Rotational surfaces, asymptote lines
	(211) Apollo of the Belvedere with parabolic curve		(212) Bean field for the determination of curvature lines
	(213) Bean field for the determination of curvature lines		(220) Area of third order to the theory of parabolic points
	(235) Double hyperboloid of Hadamard for the study of geodetic lines		(384) Rotational surfaces, asymptote lines
	(385) Rotational surfaces, asymptote lines		(653) Extended rotational ellipsoid with 3 geodetic lines