Facit Model TK Mechanical Calculator

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Facit (Facit AB) was an industrial corporation and manufacturer of office products. It was based in Åtvidaberg, Sweden, and founded in 1922 as AB Åtvidabergs Industrier. Facit AB, a manufacturer of mechanical calculators, was incorporated into the corporation the same year. In 1932, the first ten-digit calculator was manufactured by Åtvidaberg Industries, it was named FACIT and became a great success.

The first of the Facit "inverted" pinwheel calculators was the Model T from 1932. The Model TK is essentially the same machine with a number of mechanical improvements. Although model numbers and exterior styling changed frequently, this basic ten-key mechanism continued in production with only minor changes for almost 40 years, from the mid-1930s into the 1970s. Our calculator is believed to be from the model TK range

This Facit Model has four rules, reversed pinwheel, keyboard type mechanical calculator with a 9 digit keyboard, an 8 digit revolution register and a 13 digit accumulator register. It also has a sliding quotient that dispenses with the need to fill out with zeroes when dividing .


Dimensions are approximately 210W x 185D x 145H overall width 300mm and the weight is about 6.0kg.

Our model has a serial number of 220170 and was manufactured in 1952 based on the serial number.

Manufacturer: Facit
Date: 1952

Other Systems Related To Facit Model TK Mechanical Calculator:

Item Manufacturer Date
Facit 1102 (model 1) Pocket Electronic Calculator Facit Unknown
Facit 1102 (model 2) Pocket Electronic Calculator Facit Unknown
Facit Model CA1-13 Facit 1960
Facit 1004 Mechanical Calculator Facit 1967
Facit Model 1218 Facit 1969
Facit Model 1151 Facit 1973

This exhibit has a reference ID of CH28830. Please quote this reference ID in any communication with the Centre for Computing History.


Facit Model TK Mechanical Calculator

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