Mortice and Tenon Fit Test

A metric mortice and tenon fit test set

Imperial set available via Instructables
https://www.instructables.com/id/Objet-3D-Printer-Fit-Tests/

But if you're the 95% of the earth's population that uses metric then this is handy

X and Y axes are marked as necessary for designing parts based on the fit of the particular block

Tenon 1 is 10 x 5mm and then steps down in 0.05mm increments to 9.5 x 4.5mm

The mortices are all 10 x 5mm