I designed a nozzle holder to go with the side drawers that are available here on Prusa Printers. The holder has both numerical indicators of nozzle size and the dot pattern that is embossed into the wrench flats of the nozzle to indicate its size.
I set a filament color change for the numbers on top of the part to give it a contrast to make it easy to read. I put supports on the build plate and turned off the “Don't support bridges” feature in Print Settings. I used a 0.4 nozzle with 0.10 layer height, and printed it with Prusament PLA.
The author hasn't provided the model origin yet.