Hello all,

Forgive me if this has no place on a type design blog but I had really no idea where else to go.
( And this forum has always been so obliging in the past. )

I am trying to hunt down the name for this particular sort of device do-dad. I know it has been used many times for infographics and in puzzle games etc.
Some have called it a pinwheel but I know that's not right.

But I just can't figure out the name.

Here is a link to a digital form of this thing:

http://www.andrewbosley.com/the-brainstormer.html

Any ideas?

Thanks!