Intended to be used as a "resolution phantom" in a magnetic resonance imaging system to verify that the size of objects in the image matches the real world dimension. Could also be used as a "jig" to verify 3D print dimensions are accurate.

If to be used as intended (for MRI in a water bath), best to be printed with 100% infill. Otherwise, there will be significant susceptibility artifacts ( mritutor.org/mritutor/suscept.htm ). See drawing for original dimensions of "pegs".