Models of rubric: Surfaces of third order Model 72 Ruled surface of 3. order Model 73 Ruled surface of 3. order Model 74 Ruled surfaces of 3. order Model 75 Ruled surface of 3. order Model 80 Cone of third order Model 81 Cone of third order Model 82 Cone of third order Model 83 Cone of third order Model 84 Cone of third order Model 85 Cone of third order Model 86 Cone of third order Model 135 Clebsch's diagonal surface Model 136 Cubic surface with 4 real conic double points Model 137 Affine form of the cubic surface136 Model 138 Affine form of the cubic surface 136 Model 139 Affine form of the cubic surface 136 Model 140 Affine form of the cubic surface 136 Model 141 Cubic surface with 3 real conic double points Model 142 Cubic surface with 3 real conic double points Model 143 Cubic surface with 3 real biplanar double points Model 144 Cubic surface with with a biplanar double point Model 145 Cubic surface with a biplanr double point Model 146 Cubic surface with with a biplanar and 2 real conic double points Model 147 Cubic surface with a biplanar double point Model 148 Cubic surface with a conic and a biplanar double point Model 149 Cubic surface with a real conic and a biplanar double point Model 150 Cubic surface with 4 real double points Model 320 2 stereo's of a gypsum model of a surface of 3. order with the 27 lines Model 1011 Slide: Surface of 3.order Model 1012 Slide: Surface of 3.order Model 1013 Slide: Surface of 3.order Model 1014 Slide: Surface of 3.order Model 1015 Slide: Surface of 3.order