The original design of the Z3 is illustrated in Fig.24. Unfortunately no photos of the original Z3 exist, because all documents and photographs were destroyed by allied air raids during the Second World War.
Konrad Zuse rebuilt the Z3 at his Zuse KG(3) company between 1960 and 1961 (Fig.25) in order to demonstrate the performance of this machine to justify his patents and to show the world his creation (and also to demonstrate the machine for advertising purposes). Like the original machine, the rebuilt Z3 is completely constructed from relays. The Z3's memory (64 words, each comprising 22 bits) is seen on the left-hand side of Fig.25. The console is at the front, while the binary floating point arithmetic unit appears on the right-hand side. The Z3 is about five meters long, two meters high, and 80cm wide.
In 1957, the Zuse KG was moved to Bad Hersfeld, which lies 15km north of Neukirchen. This move was prompted by the lack of space for rooms and the cramped production facilities.