Mechanical, pin-wheel mechanism, with key setting.
Can multiply a 10 digit number by an 8 digit number and give a 13 digit answer.
Functions - Addition/Subtraction and Multiplication/Division/Square roots using special techniques.
310 mm x 215 mm x 150 mm (12" x 8.5" x 6"), 6.75 Kg (15 lbs.).
Made in Sweden by Atvidaberg-Facit.