There are two gauges; a smaller one, that goes from fillets of 5mm to 20mm and is 134mm total length, and a bigger one that can goes from 5mm - 30mm, however it is 257mm long, which could mean that it won't fit on your bed, I managed to barely fit it by laying it diagonally on a 220mm x 220mm bed.
I also recommend printing it number side down for better quality.
The author marked this model as their own original creation.