Models of rubric: Line geometry Model 87 Developable surface of higher order Model 88 Developable surface of higher order Model 89 Developable surface of higher order Model 90 Developable surface of higher order Model 91 Developable surface of higher order Model 92 Developable surface of higher order Model 93 Developable surface of higher order Model 94 Developable surface of higher order Model 95 Complex surface according to Klein Model 96 Complex surface according to Klein Model 97 Complex surface according to Klein Model 98 Complex surface according to Klein Model 99 Complex surface according to Plücker Model 100 Complex surface according to Plücker Model 101 Complex surface according to Plücker Model 102 Complex surface according to Plücker Model 103 Complex surface according to Plücker Model 104 Complex surface according to Plücker Model 105 Complex surface according to Plücker Model 106 Complex surface according to Plücker Model 107 Complex surface according to Plücker Model 108 Complex surface according to Plücker Model 109 Complex surface according to Plücker Model 110 Complex surface according to Plücker Model 111 Complex surface according to Plücker Model 112 Complex surface according to Plücker Model 113 Complex surface according to Plücker Model 114 Complex surface according to Plücker Model 115 Complex surface according to Plücker Model 116 Complex surface according to Plücker Model 117 Complex surface according to Plücker Model 118 Complex surface according to Plücker Model 119 Complex surface according to Plücker Model 120 Complex surface according to Plücker Model 121 Complex surface according to Plücker Model 123 Kummer surface with 8 real double points Model 124 Kummer surface with 16 double points Model 125 Kummer areas with 8 respectively 16 respectively 4 real intersections Model 237 Curvature centre point surface of the single-leaf hyperboloid Model 238 Curvature centre point surface of the single-leaf hyperboloid Model 239 Curvature centre point surface of the triaxial ellipsoid Model 240 Curvature centre point surface of the triaxial ellipsoid Model 241 Curvature centre point surface of the triaxial ellipsoid Model 242 Curvature centre point surface Model 279 The non-integrabel pfaffian problem ydx - xdy + k dz = 0 Model 279 The non-integrabel pfaffian problem ydx - xdy + k dz = 0 Model 280 Infinitesimal neighbourhood of a line congruence Model 281 Infinitesimal neighbourhood of a line congruence Model 282 Infinitesimal neighbourhood of a line congruence Model 316 Movable metal framework to the theory of the null system xy' - x'y + K (z-z') = 0 Model 316 Movable metal framework to the theory of the null system xy' - x'y + K (z-z') = 0 Model 345 Curvature centre point surface