Key-Set Mechanical Calculator
1950
Mechanical Calculator Brunsviga model 13Z
1945-1955
Demonstration piece form Brunsviga calculating machine by Brunsviga Maschinenwerke AG
1950-1955
Key operated model 16T Brunsviga mechanical calculating machine by Brunsviga Maschinenwerke AG
1950-1955
Brunsviga model 18 RK calculating machine
1957
Barrel calculating machine by Brunsivga Mashinenwerke AG
1950-1955
Model D18R twin Brunsviga calculating machine (18 register) by Brunsviga Maschinenwerke AG
1952-1959
Brunsviga lever-set calculator used at Ferrodo Ltd.
1940-1950