Models of rubric: Configurations Model 320 2 stereo's of a gypsum model of a surface of 3. order with the 27 lines Model 336 Stereo of the Desargues configuration Model 400 Desargues' theorem in space and in the plane Model 401 Schläfli double six Model 419 10 pairwise orthogonal lines Model 420 Determination of a special double six by five points in space Model 431 Large demonstration model of the Desargues' theorem in space