Nozzle size indicator

Small indicator to remind you what size nozzle you have fitted to your printer. 

I have mine mounted at the top of a 3030 extrusion so the “slider” cannot slide off the top.

It is fastened with a M3 cap bolt.

I also did a filament change on the top of the indicator so the numbers are showing white against a black background with the slider being in the printer accent colour.