Recently I've been building a bunch of mini's with my son with a bunch of different base sizes.
Rather than keep measuring, this is an easy tool to use for myself and my kid to quickly confirm that we have the right base size.
Covers the following bases, which is listed on the underneath;
25
28
32
40
50
60
Currently only printed the half version but also added the full circular model.
It would have been noce to have the number within the circle but there is not enough room.
The author marked this model as their own original creation.