Göttingen Collection of Mathematical Models and Instruments

Calculating machine Brunsviga 20

Model 909

Calculating machine Brunsviga 20
Metall41 × 22 × 17L I 32


Calculating machine Brunsviga 20, serial number 171318.


The calculating machine Brunsivga 20 is the successor of the "Nova IVa" and was produced between 1932 and 1963. The machine weighs 11.5 kg. It has a 12 digit entry register, an 11 digit counter register, and a 20 digit result register.

Showcase of this model is Case number 53


Separataband M2 im Mathematischen Institut p. 243.

Separataband M2 im Mathematischen Institut p. 71.

Wagner, C.(2013). Rechenmaschine Brunsviga , Göttingen. Online version