Matho model's photoetch numbers come in different sizes, without representing any specific scale. There are two references available, 80006 and 80007, with different sizes:
- 80006 has numbers of 1,5 - 2,0 - 2,5 - 3,0mm
- 80007 has numbers of 4,0 - 5,0mm
8006

8007

I have received a sample subset with all sizes on two smaller frets. The numbers are perfectly defined, even the smallest ones, and have a step for easier removal.
Sample Subset received


For this example of use I painted them on directly with a couple of coats of AK's black marker pen, waiting only a few seconds in between and glued them on with Ammo's Ultra glue.
In less than a minute I added the numbers to the MiniArt house, giving it an original and realistic yet simple touch.

Conclusion
A simple but effective set for adding well defined small numbers.