NMR Mandhala Gradient

###NOTE: The most up-to-date version of this thing is [available here.](https://www.thingiverse.com/thing:3799946)

#####These are two parts of a gradient to be used with a Halbach Mandhala. The angle of the two gradient pieces relative to each other changes the gradient strength along the external homoegeneous field provided by the Mandhala.

This Thing has two distinct pieces that are designed to work together:

**Top**
+ 8cm inner diameter, 10cm outer diameter
+ 4 1/2" x 1/4" x 1" s