Nr. 514
Calculating clock of Wichmann
Row: 2

Nr. 933
2 Slide rules
Row: 2

Nr. 519
Slide rule
Row: 2

Nr. 517
Special slide rule
Row: 2

Nr. 516
Slide rule
Row: 2

Nr. 520
Japanese calculating machine
Row: 2

Nr. 900
Russian abacus
Row: 2

Nr. 543
Kings Patent calculator
Row: 2

Nr. 932
Adding device Arithma
Row: 3

Nr. 940
Calculating machine Curta
Row: 3

Nr. 511
Calculating machine Burkhardt-Arithometer
Row: 3

Nr. 515
Calculating machine Trick
Row: 3

Nr. 509
Calculating machine Mercedes
Row: 3

Nr. 862
Calculating machine of Ludwig Spitz
Row: 3

Nr. 513
Calculating machine Adix
Row: 3

Nr. 499
Calculating machine Archimedes
Row: 4