Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3512754.

This is a simple remake of jerint's magnetic tape holder (https://www.thingiverse.com/thing:3467287). My wife's measuring tape was longer, so I had to enlarge it. I also had some magnets, they were a different size (6.3mm diameter, 2.5mm thick). I made this is sketchup, which approximates circles roughly, so you can see that it is a polyhedron. I think it looks okay though. It works fine but needed a little sanding to get the two halves to turn smoothly (may depend on your printers accuracy).