The SH2 is a 4 stage DIY PHASER project based on the V2 Small Stone.. This is the version that comes to mind when most players think of the classic effect.
The dimensions of this pcb are mm 79.5mm x 58.5mm. This pcb is included in the ready to solder kit:
This project is by Lectric-fx.
Here is the direct link to the manual with layout and schematic: