{"id":154043,"date":"2020-07-13T17:06:19","date_gmt":"2020-07-13T15:06:19","guid":{"rendered":"https:\/\/dev-museonicolis.leaduser.it\/1940-monroe-l200x-calcolatrice\/"},"modified":"2021-12-23T16:42:38","modified_gmt":"2021-12-23T15:42:38","slug":"1940-monroe-l200x-calcolatrice","status":"publish","type":"post","link":"https:\/\/www.museonicolis.com\/en\/1940-monroe-l200x-calcolatrice\/","title":{"rendered":"Monroe, 1940, L200X"},"content":{"rendered":"

Monroe, 1940, L200X, USA<\/strong><\/p>\n

The Monroe Calculating Machine Company<\/strong> was founded by Jay R. Monroe in 1912<\/strong> in order to make calculators based on the latest design by Frank Baldwin. Baldwin had invented many different calculation machines, but was unable to market them successfully for many years.<\/p>\n

The first Monroe calculator<\/strong> was the model A in 1911\/1912<\/strong>. Larger scale production started with the model D in 1914. This was followed by the models E, F, and G over the next few years. The model K was released in 1921. Note that it seems that these early model letters simply denote the year it was first made, from A in 1911 to K in 1921.<\/p>\n

In 1929<\/strong> Monroe made the model L<\/strong>, that is mechanically identical to the model K, except that it was about half the size, and much lighter. Versions of the model L\/LA were produced until the 1960s. Several further calculator models followed, most of them electrically driven.<\/p>\n

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