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Vintage Mechanical Adding Machine Calculator - eBay
WebApr 25, 2024 · 0:00 / 9:05 The Calculator Series: Arithma Addiator Joe Van Cleave 20.2K subscribers Subscribe 98 4.3K views 4 years ago The Calculator Series The Arithma Addiator is another compact device... WebAug 21, 2024 · Some of us still do the calculation in our head first, and then check it with a calculator... That skill is a must-have in my elementary school. You can't finish math tests in timethus can't graduate if you can't multiply two 4 digit numbers in 3 seconds. Not sure what it is like in US. ps: No time for checking with calculators. Jul 29, 2024 #48 tasa dgt canje
Addiator/Slide-rule - Vintage Calculators
WebThis is one of three versions of the Addiator in the Smithsonian collections. It was given to the Museum by the machinist and museum specialist George A. Norton, Jr. Norton used … WebThe Addiatoris a mechanical add/subtract calculator, once made by Addiator Gesellschaft, Berlin. Variants of it were manufactured from 1920 until 1982. It is composed of sheet-metal sliders inside a metal envelope, manipulated by a stylus, with an innovative carrymechanism, doing subtract ten, carry onewith a simple stylus movement. WebFull-keyboard key-driven calculator. Addiator Invented 1889: featured model 1920s - 1930s "Troncet" type stylus pocket calculator. The Millionaire 1889 - 1935 Direct multiplying machine. Addometer 1900s - 1960s Dial stylus calculator. Golden Gem 1900s - Chain adder. S & N / The SUN 1910 - Chain adder. Monroe LN-160X tasa diferida