Current Nozzle Indicator

I've started experimenting with different nozzle sizes and didn't want to accidentally run a gcode through the printer for the wrong nozzle, so I made up this simple indicator to quickly see which nozzle is currently installed. The arrow stays in place and the outer labels rotate.

I made this in FreeCAD and it really didn't like trying to create a 0, and I knew printing a decimal would be difficult, so I left it as:
2 for 0.2mm
3 for 0.3mm
4 for 0.4mm
5 for 0.5mm
6 for 0.6mm
8 for 0.8mm
1 for 1.0mm

I added the bar between 1 and 2 to indicate the start/end position for the label

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Assembly instructions:
The Backplate has the Labels placed over it, then the Arrow. I superglued my arrow in to keep it all together.