Göttingen Collection of Mathematical Models and Instruments

Case number 28

Klein bottle (cut in half) Boy's surface of degree 6 Klein bottle Two-sided surface with the clover leaf sling as boundary curve
Möbius strip Clover leaf sling on torus 3-times twisted Möbius strip with clover leaf sling as border Model of a clover leaf sling with singularity-free surface
Clover leaf sling on torus Knitted Möbius strip Three Möbius strips Three Möbius strips
Three Möbius strips Wooden ring with 7 neighbouring areas Wooden ring with 7 neighbouring areas Three rings that are devoured with each other, but not pairwise
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