Arithmometer - Mechanical Calculating Machine "FELIX - M" - USSR – 1950-60 Good condition - working - with minor traces of wear Manufactured in 1950-60 in USSR. This counting machine is a modification of Oderson's lever calculator. It allows you to work with operands up to 9 characters long and receive a response up to 13 characters long (up to 8 for private from division). Input of numbers is carried out by moving the levers up and down. The addition operation requires pulling the right-hand handle and rotating it one turn at a time. The operation of subtraction is the reverse, turning one turn from oneself Working. Weight - 3,7 kg Dimensions - 25x16x12 cm