Total list
| Number | Title | Date of Design | Dimension (cm) | Material |
| Serie I; Plaster models | ||||
| Serie I, nr. 2a | The enveloping surface of a system of rays of a paraboloid. The two components separated | 1877 | 10-10 and 7-7 | Plaster |
| Serie I, nr. 2b | The enveloping surface of a system of rays of a paraboloid. The two components associated | 1877 | 10-10-11 | Plaster |
| Serie I, nr. 3a | The enveloping surface of a system of rays of a one sheeted hyperboloid. The two components separate | 1877 | 17-17-16 | Plaster |
| Serie I, nr. 3b | The enveloping surface of a system of rays of a one sheeted hyperboloid. The two components associated. | 1877 | 10-10-18 | Plaster |
| Serie I, nr. 4 | The geodesics on an ellipsoid of revolution. | 1877 | 10-10-18 | Plaster |
| Serie I, nr. 5 | The geodesics on a 3-axis ellipsoid through the umbilic point. | 1877 | 10-10-18 | Plaster |
| Serie II; Plaster models | ||||
| SerieII, nr. 1a | Model of a Kummer surface. All sixteen double points are real. | 1877 | 21-21-18 | Plaster |
| Serie II, nr. 1b | Model of a Kummer surface. Eight double points are real. | 1877 | 30-20 | Plaster |
| Serie II, nr. 1c | Model of a Kummer surface. Four double points are real. | 1877 | 20-15 | Plaster |
| Serie V; Plaster models | ||||
| Serie V, nr. 2a | Surface of revolution with constant positive curvature with geodesics. The sphere. | 1880 | 9 | Plaster |
| Serie V, nr. 2b | Surface of revolution with constant positive curvature with geodesics. The meridian of the surface of revolution meets the axis. | 1880 | 11-7 | Plaster |
| Serie V, nr. 2c | Surface of revolution with constant positive curvature with geodesics. The meridian of the surface of revolution does not meet the axis. | 1880 | 10-12 | Plaster |
| Serie V, nr. 3 | Generalized helicoid with constant positive curvature. | 1880 | 20-15 | Plaster |
| Serie V, nr. 4 | Generalized helicoid with constant negative curvature. | 1880 | 24-15 | Plaster |
| Serie V, nr. 5a | Four forms of the cyclide of Dupin. Ring cyclide with imaginary points. | 1880 | 7-14 | Plaster |
| Serie V, nr. 5b | Four forms of the cyclide of Dupin. Horn cyclide; two real double points join the two sheets of the surface lying apart | 1880 | 6-19 | Plaster |
| Serie V, nr. 5c | Four forms of the cyclide of Dupin. Spindle cyclide; one sheet of the surface lying on another and joint by two real double points | 1880 | 10-11 | Plaster |
| Serie V, nr. 5d | Four forms of the cyclide of Dupin. Parabolic cyclide with two real double points; spreads out to infinite with a single sheet of the surface | 1880 | 12-15 | Plaster |
| Serie V, nr. 6 | The catenary on a sphere | 1880 | 9 | Plaster |
| Serie V, nr. 7a | The envelope of the geodesic lines on the ellipsoid, coming from one point. The extended ellipsoid of revolution. | 1880 | 12-8 | Plaster |
| Serie V, nr. 7b | The envelope of the geodesic lines on the ellipsoid, coming from one point. Spheroid, with the envelope for two different starting points. | 1880 | 7-10 | Plaster |
| Serie VI; Models of wave surfaces and a circle cone, as well as plaster models | ||||
| Serie VI, nr. 1 | Fresnel's wave surface. | 1880 | 12-8 | Plaster |
| Serie VI, nr. 2 | The associated ellipsoid with equal axes. | 1880 | Plaster | |
| Serie VI, nr. 4 | The wave surface for optical biaxial crystal in individual octant with the spherical and ellipsoid lines. | 1880 | 24-9 | Plaster |
| Serie VI, nr. 6a | The space curve of order three on cylinders of second order; the ellipse of order three. | 1880 | 10,5-6,5 | Plaster |
| Serie VI, nr. 6c | The space curve of order three on cylinders of second order; the parabola of order three. | 1880 | 10,5-6,5 | Plaster |
| Serie VII; Plaster models of surfaces of order three | ||||
| Serie VII, nr. 2 | Surface with three real double points (A1). | 1881 | 13-15 | Plaster |
| Serie VII, nr. 3 | Surface with 4 real ordinary double points. | 1881 | 13-15 | Plaster |
| Serie VII, nr. 5 | Surface with 4 real ordinary double points. | 1881 | 13-15 | Plaster |
| Serie VII, nr. 6 | Surface with 4 real ordinary double points. | 1881 | 13-15 | Plaster |
| Serie VII, nr. 7 | Surface with 3 real ordinary double points. | 1881 | 11-15 | Plaster |
| Serie VII, nr. 8 | Surface of the same kind, considered from the inside, for the formation of the D4 double point. | 1881 | 11-15 | Plaster |
| Serie VII, nr. 9 | Surface with three real A2 double points. | 1881 | 11-15 | Plaster |
| Serie VII, nr. 10 | Surface with an A2 double point, whose tangent planes at that point intersect the surface in three lines. The model is also valid for the transfer of the A2 into a D4 double point. | 1881 | 10-15 | Plaster |
| Serie VII, nr. 11 | Surface with an A2 double point, whose tangent planes at that point are imaginary conjugated. | 1881 | 12-15 | Plaster |
| Serie VII, nr. 12 | Surface with an A3 double point and two real ordinary (A1) double points. The tangent planes at the A3 double point are real. | 1881 | 13-15 | Plaster |
| Serie VII, nr. 14 | Surface with an ordinary A1 double point and an A4 double point. | 1881 | 13-15 | Plaster |
| Serie VII, nr. 15 | Surface with an ordinary A1 double point and an A5 double point. | 1881 | 12-15 | Plaster |
| Serie VII, nr. 16 | Surface with a D4 double point, whose tangent plane intersects the surface in three real lines. | 1881 | 12-15 | Plaster |
| Serie VII, nr. 17 | Surface with a D4 double point, whose tangent plane intersects the surface in one real line. | 1881 | 12-15 | Plaster |
| Serie VII, nr. 18 | Surface with a D5 double point. | 1881 | 12-15 | Plaster |
| Serie VII, nr. 19 | Surface with a E6 double point. | 1881 | 12-15 | Plaster |
| Serie VII, nr. 20 | A ruled surface, whose double straight line is completely surrounded by a real sheet of the surface. | 1881 | 13-15 | Plaster |
| Serie VII, nr. 21 | Ruled surface, with a double line limited by two cuspidal points at finite distance. | 1881 | 13-15 | Plaster |
| Serie VII, nr. 23 | Cayley's ruled surface with a cuspidal point (at finite distance). | 1881 | 13-15 | Plaster |
| Serie VII, nr. 24a | Hessian surface for models VII, 2 and VII, 5. | 1881 | 21-25 | Plaster |
| Serie VII, nr. 24b | Star shaped part of the preceding for a pentaeder, which consists of the infinitely far plane and a regular tetrahedron. | 1881 | 13-16 | Plaster |
| Serie VII, nr. 25 | Hessian surface for model VII, 7. | 1881 | 21-25 | Plaster |
| Serie VIII; Plaster models | ||||
| Serie VIII, nr. 3 | Surface of order 12; caustic surface. | 1882 | 13-20-12 | Plaster |
| Serie VIII, nr. 6a | Right helicoid. | 1882 | 23-22 | Plaster |
| Serie IX; Plaster models of surfaces of order four | ||||
| Serie IX, nr. 1 | Surface with four double planes. | 1883 | ? | Plaster |
| Serie IX, nr. 3 | Steiner's Roman surface. | 1883 | ? | Plaster |
| Serie IX, nr. 4 | Surface with four double planes. | 1883 | ? | Plaster |
| Serie IX, nr. 5 | Surface with four double planes. | 1883 | ? | Plaster |
| Serie IX, nr. 6 | Surface with four double planes. | 1883 | ? | Plaster |
| Serie IX, nr. 7 | Two models of the Cyclide of Dupin. | 1883 | ? | Plaster |
| Serie IX, nr. 8 | Two models of the Cyclide of Dupin. | 1883 | ? | Plaster |
| Serie IX, nr. 9 | Surface with a double line. | 1883 | ? | Plaster |
| Serie X; Plaster-, wire- and brass plate-models | ||||
| Serie X, nr. 1 | Ten wire racks for the representation of minimal surfaces. | 1885 | ? | Iron wire |
| Serie X, nr. 2b | Models for thread constructions of the ellipsoid. Construction of a confocal ellipsoid and hyperboloid. | 1885 | 20-9 | Plaster |
| Serie XI; Eight wire models | ||||
| Serie XI, nr. 2 | Over the dependence of the return elements of the projections of an odd curve on the curve itself. | 1884 | ? | String |
| Serie XI, nr. 6 | Over the dependence of the return elements of the projections of an odd curve on the curve itself. | 1884 | ? | String |
| Serie XI, nr. 8 | Over the dependence of the return elements of the projections of an odd curve on the curve itself. | 1884 | ? | String |
| Serie XIII; Ten string models of ruled surfaces of order four | ||||
| Serie XIII, nr. 1 | Ruled surface with two real double lines and four Pinchpoints on each of them. | 1886 | ? | String |
| Serie XIII, nr. 2 | Ruled surface with two real double lines and without Pinchpoints. | 1886 | ? | String |
| Serie XIII, nr. 3 | Ruled surface with two real double lines and four Pinchpoints on both lines. | 1886 | ? | String |
| Serie XIII, nr. 4 | Ruled surface with two conjugated imaginary double lines. | 1886 | ? | String |
| Serie XIII, nr. 5 | Ruled surface with self intersection forming a line and with four Pinchpoints on the line. | 1886 | ? | String |
| Serie XIII, nr. 7 | Ruled surface with a triple line and two constant tangential planes along the line. | 1886 | ? | String |
| Serie XIII, nr. 8 | Ruled surface with a double conic and a double line that intersects it. | 1886 | ? | String |
| Serie XIII, nr. 9 | Ruled surface with real double curve of third order and 4 Pinchpoints. | 1886 | ? | String |
| Serie XIII, nr. 10 | Ruled surface with one real double curve of third order and without Pinchpoints. | 1886 | ? | String |
| Serie XVI; Plaster models for study of confocal surfaces of grade two | ||||
| Serie XVI, nr. 1 | Ellipsoid with three basic intersections and eighteen lines of curvature. | 1888 | 16-14-9 | Plaster | Serie XVI, nr. 3 | Sphere with three maximal circles and eighteen confocal spherical conic sections. | 1888 | 14,5 | Plaster |
| Serie XVII; Plaster models of different kind | ||||
| Serie XVII, nr. 1 | Model of a minimal surface which contains a group of real parabolas. | 1886 | 21-24 | Plaster |
| Serie XVII, nr. 2a | The seven types of plane curves of order three principal. | 1886 | 10 | Plaster |
| Serie XVII, nr. 2b | The seven types of plane curves of order three principal. | 1886 | 10 | Plaster |
| Serie XVII, nr. 3a | Surfaces of constant positive curvature. The elliptic type. | 1886 | 16-16-8 | Plaster |
| Serie XVII, nr. 3b | Surfaces of constant positive curvature. The cyclic type. | 1886 | 16-15-14 | Plaster |
| Serie XVII, nr. 4 | Model of the Catalan's minimal surface. | 1886 | 22-22-14 | Plaster |
| Serie XVII, nr. 5a | Orthogonal system on the sphere. | 1888 | 15 | Plaster |
| Serie XVII, nr. 5b | Orthogonal system on the sphere. | 1888 | 15 | Plaster |
| Serie XVII, nr. 5c | Orthogonal system on the sphere. | 1888 | 15 | Plaster |
| Serie XVII, nr. 6a | Regular polyhedron corresponding to a regular partition of the surface of the sphere. The tetrahedral type. | 1888 | 9 | Plaster |
| Serie XVII, nr. 6b | Regular polyhedron corresponding to a regular partition of the surface of the sphere. The tetrahedral type. | 1888 | 9 | Plaster |
| Serie XVII, nr. 6c | Regular polyhedron corresponding to a regular partition of the surface of the sphere. The icosahedral type. | 1888 | 9 | Plaster |
| Serie XIX; Ten models for the representation of regular area division | ||||
| Serie XIX, nr. 2 | Ten models for the representation of regular area divisions. | 1891 | ? | Plaster |
| Serie XIX, nr. ? | Ten models for the representation of regular area divisions. | 1891 | ? | Plaster |
| Serie XXIV; Kinematic models | ||||
| Serie XXIV, nr. 7 | Instrument to draw cycloids. | 1898 | ? | wood, glass & Iron |
| Serie XXV; Seven string models of a cone of order three | ||||
| Serie XXV, nr. 1 | Cone of genus zero, with a return side. | 1899 | 17 | String |
| Serie XXV, nr. 4 | Cone of genus zero, with a return side. | 1899 | 17 | String |
| Serie XXVI; Tool for education in the representation of projective geometry | ||||
| Serie XXVI, nr. 17 | Individual helix with 5 turns. | 1901 | ? | Metal |
| Serie XXVIII; Six models about the theory of cubic space curves | ||||
| Serie XXVIII, nr. 1 | Ellipse on an elliptical cylinder. | 1902 | 12-14-40 | Plastic |
| Serie XXVIII, nr. 2 | Hyperbola on a hyperbolic cylinder. | 1902 | 19-28-40 | Plastic |
| Serie XXVIII, nr. 3 | Parabolic hyperbola on a parabolic cylinder. | 1902 | 16-16-40 | Plastic |
| Serie XXVIII, nr. 4 | Parabola on a hyperbolic cylinder. | 1902 | 16-16-40 | Plastic |
| Serie XXVIII, nr. 6 | Horopter. | 1902 | 20-23-47 | Metal |
| Serie XXX; Plaster models of different kind | ||||
| Serie XXX, nr. 1 | Surface with only three singularities of the projective plane. | 1903 | 21-36-8 | Plaster |
| Serie XXX, nr. 2 | Symmetical surface of a projective plain. | 1902 | 21-25-17 | Plaster |
| Serie XXX, nr. 3 | Osculation surface into parabolic points. | (1903,1905, 1909 of 1910) | 15 | Plaster |
| Serie XXX, nr. 5 | Model with the places of tending center points of a space curve. | (1903,1905, 1909 of 1910) | 15-22 and 5-17 and 5 | Plaster |
| Serie XXXII; Different models | ||||
| Serie XXXII, nr. 2 | Mobile wood model for the explanation of the theorem of Dandelin. | 1906 of 1908 | 18-27 | Wood |
| Sparenberg | ||||
| Sparenberg, nr. 1 | Front weel of an airplane. | 1960? | ? | Electricity |
| Sparenberg, nr. 2 | Weels with an oscillator. | 1960? | ? | Metal and plastic |
| Sparenberg, nr. 3 | Wilberforce Pendulum | 1960? | ? | Metal |
| Rest | ||||
| Rest, nr. 1 | Torsi | - | - | Wood |
| Rest, nr. 2 | Geometrical surfaces watcher | - | - | Wood |
| Rest, nr. 3 | Sphere | - | 32 | String |
| Rest, nr. 4 | Movable one sheeted hyperboloïd. | - | 36 | Metal |
| Rest, nr. 5 | Movabel hyperbolic paraboloid | - | 31 | Metal |
| Rest, nr. 6 | Movable one sheeted hyperboloid, half, with evert | - | - | Metal |
| Rest, nr. 7 | - | - | - | String |
| Rest, nr. 8 | - | - | - | Metal |
| Rest, nr. 9 | - | - | - | Metal |
| Rest, nr. 10 | - | - | - | String |
| Rest, nr. 11 | - | - | - | String and Metal |
| Rest, nr. 12 | Maybe a part of Serie X, nr 1? | - | - | Metal |
| Rest, nr. 13 | Two sheeted hyperboloid | - | 34 | Metal |
| Rest, nr. 14 | One sheeted hyperboloid | - | 34 | Metal |
| Rest, nr. 15 | Icosidodecahedron | - | - | Metal |
| Rest, nr. 16 | schalentheorie? | - | - | Metal |
| Rest, nr. 17 | Helix of flat figures? | - | - | Metal |
| Rest, nr. 18 | Cube with two inscribed tetrahedrons, which is half of the surface, contains an octahedron. | - | - | String |
| Rest, nr. 19 | Icosahedron with an inscribed dodecahedron. | - | - | String |
| Rest, nr. 20 | Cuboctahedron | - | - | String |
| Rest, nr. 21 | Icosidodecahedron | - | - | String |
| Rest, nr. 22 | Dodecahedron with inscribed icosahedron | - | - | String |
| Rest, nr. 23 | Great Icosahedron | - | - | Wood |
| Rest, nr. 24 | Small Stellated Dodecahedron | - | - | Wood |
| Rest, nr. 25 | Great Stellated Dodecahedron | - | - | Wood |
| Tano, Clebsch diagonal surface | Clebsch diagonal surface | - | - | Wood |