Vector arrows of various sizes and colors fit in wooden bases.

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(A)Mechanics - A+70: Vectors

Vectors and their representation. Set of Dalven's Arrows: A dozen or so, of various colors and sizes, may be fitted on a cubical or hemispherical wood base.
UCB Index: 
A+70+5
PIRA Index: 
1A40.10
Demo Diagram: 
Demo Picture: 

UCB Taxonomy:

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