The Astra Fuzz is a clone of the Astrotone Fuzz, also released as the Sam Ash Fuzzz Boxx. It was manufactured by the Universal Amplifier Company in New York City from 1966-1968.
The dimensions of this pcb are 49,5mm x 36,5mm. It is also available as ready to solder kit:
This project is by Aion Electronics. Since the modifications featured in this project require some basic knowledge, this project is rather for more experienced builders.
Here is the direct link to the manual with layout and schematic:
Here you can find build reports on this project: Build Reports