FACIT NTK (1941) Vintage Mechanical Calculator

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Facit NTK Mechanical Calculator, 1957

(17:45)

Facit NTK - mechanical calculator demonstration

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Facit NTK Mechanical Calculator Restoration Progress

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Facit NTK Mechanical Calculator: Division by zero, decimal markers

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Computing Anno 1954 with the Facit NTK

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Facit C1-13 NTK - How to do: Basic Use - Division - Pi Calcuation - Rule of Three -

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How to use a Facit mechanical calculator

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Calculadora mecánica FACIT NTK

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Facit TK Mechanical Calculator Demo (1936)

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Comparing the *Ker-chunk* on two Facit Mechanical Calculators

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Facit TK

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Facit calculator: a more complete tour

(2:45)

Calculation of Pi (nearly) on a Facit NEA pinwheel calculator

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Facit NE electromechanical Calculator

(1:37)

Inside the Facit TK Mechanical Calculator

(11:55)

Facit Standard 1928

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Facit Mechanical Calculator

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Basic operations on a Mechanical Calculator

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