Faber-Castell 390



Front without slide

Back of the slide

Bottom of the slide


Length 15 cm
Number of scales 10
Country of origin Germany
Country of manufacturing Germany
Year of manufacturing 1942
Status of the slide rule Near mint
Material of the slide rule Celluloid on wood
Type of cursor Very special aluminium with glass cursor, wit an indicator at the bottom of the slide rule for  the 3 decades log scale.
Status of the box Normal signs of use
Type of box  
Status of the manual None
Collection number 56
Further comments This 390 has a rahter simple scale arrangement with the exception of the 3 decade log scale at the bottom that puzzles me. Such a scale I have only seen on some of the electrical slide rules of Faber-Castell.

On the back one of the owners has carved his initials: S.H.


 Last updated: 04-09-2009