Multimedia Gallery - A two-dimensional representation of the Klein bottle topology.

The image of the mapping f, a representation of a Klein bottle [6]

Figure 12 from The Klein bottle: variations on a theme

Imaging maths - Inside the Klein bottle

Imaging maths - Inside the Klein bottle

Klein Bottle is a Real Natural in the Zoo of Geometric Shapes

What are some practical uses for Klein Bottles? - Quora

Unraveling the Mystery of Time-Stabilized Klein Bottles

Imaging maths - Inside the Klein bottle

Construction of torus (upper row) and Klein bottle (lower row)

What kinds of non-orientable objects have been created? All that I know about is a Möbius strip and the Klein bottle. - Quora

Unraveling the Mystery of Time-Stabilized Klein Bottles

a Cater's hand-drawn images to related the two different-looking Klein