Texas Instruments Pocket calculator TI-30 ECO RS school calculator
Calcuso Standard Package: Casio FX-87DE X Technical-Scientific Calculator + WYNGS Protective Case Black + CALCUSO Book + Extended Warranty from Calcuso: Amazon.de: Stationery & Office Supplies
Casio fx-991ES PLUS 2 Scientific Calculator with 417 Functions and Display, Natural : Amazon.de: Stationery & Office Supplies
Sharp EL-W531 XH-GR Scientific Calculator WriteView Display Metallic Green with Battery 335 Functions for Grammar/Secondary School : Amazon.de: Stationery & Office Supplies
Taschenrechner Braun, Schwarz | Manufactum
Bildagentur | mauritius images | Adding machine. Once an indispensable piece of office equipment, they were phased out by calculators in the 1970s, and later by personal computers.