Logomat 2001 PfiffiKUS circular slide rule full set 1960 Germany

This very small circular slide is called the PfiffiKUS 2001 and is made by Logomat from Germany as a gadget to promote their much more complicated slide rules like the Logomat 2000 system. But when the PffiffKUS was released it clearly had a practical use. For it was still able to perform many easier calculations and was marketed as a “calculator marvel” in German “Rechenwunder”. It comes on the original book like case and has the original manual as well, so full set. The slide rule is hardly used and working perfectly. The slide rule measures only 5 cm or 2 inches in diameter (plastic cursor comes outside this diameter). Check the attached video on how to work your vintage man tool : slide rule operation instructions!