basic fillet gauge

While makeing a reproduction of a 3 wheeler part I found out that one of my corner fillets was wrong. To make sure i dont make the mistake again i came up with these basic gauges to measure the fillets on part corners. I only have 4 sizes right now. It would be easy to make larger sizes.

To keep them organized i added a 3mm hole in the center to place a 3mm screw or even a basic ball chain. They are also stackable so the screw is the best option.

Edit already.

I changed the font on the front to make it easier to print and see at .2 layer height. On a msla printer on .05 the font was fine but still tiny on the 5mm gauge.