Vintage Facit CM2-16 Calculator

Vintage Facit CM2-16 Calculator

Please note that there is a manual but it is not for this particular model

Facit Model CM2-16, S/N 1086027
Digits: 11 keyboard, 9 counter, 16 accumulator 
Dimensions: 240W x 275D x 155H, overall width 330mm 
Weight: 7.8 kg 
10-key keyboard, grey die-cast cover 
Manufactured: Atvidaberg-Facit, Sweden, 1959-1967

Model CM2-16 from the 1960s was the first Facit calculator to use the now-familiar ten-key numeric keypad in place of the 2-row "Dalton" keyboard. The keypad mechanism achieves a very light touch by eliminating (almost) all spring tension on the downstroke, and using the rotor escapement and return spring to provide the restoring force for the upstroke.

The calculating mechanism is similar in principle to the Model TK, but is rather more elaborate. The rotor has been extended to 11 digits, with 9 in the counter register and 16 in the accumulator. The extra handle on the left-hand side controls a "back transfer" mechanism, which can operate between either the accumulator or the counter register and the rotor. (Most back-transfer mechanisms operate from the accumulator only, to allow re-use of the result from a multiplication. Back-transfer from the counter is a rare but valuable feature which provides the same convenience in division). The first three of the red control keys have the same functions as on the C1-13; the fourth (rightmost) is used to position the rotor for back-transfers. The machine has extensive interlocks to prevent mis-operation.

POSTAGE: R95.00 Post Office