Standard helicoid

Model 67

Constructor:	Category:
C. Tesch, Karlsruhe	E VI 4

Description

Standard helicoid (fibers).

Showcase of this model is Case number 8

References

Schilling, Martin(Hrg.): Catalog mathematischer Modelle, Leipzig(Verlag von Martin Schilling) 1911, 7.Auflage, No.132. p. 131.