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Vintage Adding Machine - Olivetti Summa PRIMA 20, S/N 430302 - Office Equipment - Calculators

Reduced - Vintage Adding Machine - Olivetti Summa PRIMA S/N 430302 - Office Equipment - Calculators

A replica of the calculating machine of Johann Helfrich Müller from 1784

A replica of the calculating machine of Johann Helfrich Müller from It could add, multiply, divide and subtract. And it even had a warning bell if you tried to subtract a larger number from a smaller.

Ettore Sottsass, Calculator for Olivetti, c1960.

Olivetti Logos 40 Printing Electronic calculator designed by Ettore Sottsass. Manufactured in

Burroughs Adding Machine Vintage 1920s Portable Accounting Pre Calculator #Burroughs

Burroughs Adding Machine Vintage 1920s Portable Accounting Pre Calculator #Burroughs

1970's calculator vintage

1970's calculator vintage

1956 Divisumma 24 calculator by Marcello Nizzoli for Olivetti.

1956 Divisumma 24 calculator by Marcello Nizzoli for Olivetti.

Victor Adding Machine (1920s).

ANTIQUE VINTAGE 1920s VICTOR ADDING MACHINE REGISTER

Texas Instruments TI-57 - My very first programmable calculator (1980)

Texas Instruments - My very first programmable calculator

100 YEAR OLD ANTIQUE Industrial Machine Early 1900s Vintage Mechanical Calculator made by Marchant in California Pinwheel Style by Aces Finds Vintage, via Flickr

100 YEAR OLD ANTIQUE Industrial Machine Early 1900s Vintage Mechanical Calculator made by Marchant in California Pinwheel Style by Aces Finds Vintage, via Flickr

Unisonic 739 SQ Calculator, Vintage 1970s Geekery

Unisonic 739 SQ Calculator, Vintage 1970s Geekery

VHS -- What they aren't showing is the BATTERY PACK that you wore strapped around your waist.

This stylish purse comes with an attachment to help you finalize your Borg collective assimilation.

1878 Patent issued for Odhner calculating machine. *VFR Willigot T. Odhner was granted a patent for a calculating machine that performed multiplications by repeated additions. The patent, a modified and compact version of Gottfried von Leibniz stepped wheel, was acquired and embodied in Brunsviga calculators that sold into 1950s.*CHM

1878 Patent issued for Odhner calculating machine. *VFR Willigot T. Odhner was granted a patent for a calculating machine that performed multiplications by repeated additions. The patent, a modified and compact version of Gottfried von Leibniz stepped wheel, was acquired and embodied in Brunsviga calculators that sold into 1950s.*CHM

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