Nr. 48
The four types of space curves of 3. order
Row: 2

Nr. 47
The four types of space curves of 3. order
Row: 2

Nr. 49
The four types of space curves of 3. order
Row: 2

Nr. 50
The four types of space curves of 3. order
Row: 2

Nr. 60
Two single-leaf rotary hyperboloids
Row: 3

Nr. 61
Hyperboloid gear
Row: 3