Spool filament gauge

I am always curious to know how much filament is left on my spool, but on the prusament spool there are only 3 length marks and it is difficult to see them.

In order to get a better visualization of the length, I designed this simple gauge that can be easily installed on the side of the spool for a quick check :)

There is 4 location where the gauge can be easily installed, see the highlighted fixation holes in the picture below :

Feel free to tip me or to follow me on Instagram if you like my work :)

Print instructions

-print with a 0.4mm nozzle otherwise the text might not print properly.

Single color
-Layer height: 0.2 mm
-Support: Not needed

multi color
-Layer height: 0.2 mm
-Support: Not needed
-change filament color at: 0.8mm