Addo-X 7341-82

Duplex booking machine

ca. 1960

This Swedish automatic adding machine was manufactured by A.B. Addo in Malmö. Model 341 can be identified as the basic machine, a sub-zero balancing two-species machine. It is supplemented by a second adder, which, however, only subtracts to zero. The machine has various automatic functions, e.g. date printing, red printing of negative values, correction by automatic reversal, print repetition, non-write facility, automatic subtotal and final total. Everything is controlled by a control bridge on which 4 different programs can be set and which are easily selectable. The electric account feed draws the form into the machine line by line. The machine was built until around 1965 and cost about DM 5000.