The Memento is a classic delay pedal. It got updated to better available parts and some improving features.
The dimensions of this pcb are mm 81mm x 59mm. This pcb is included in the ready to solder kit:
This project is by Lectric-fx. As this is a quite complex circuit and as it requires some pre-setting this is more for the experienced builder!
Here is the direct link to the manual with layout and schematic: