Image: 17th-century-mechanical-calculators

Original image(2,000 × 1,194 pixels, file size: 1.88 MB, MIME type: image/jpeg)

Description: 17th century mechanical calculators by Blais Pascale in the french Musée des Arts et Métiers, Paris
Title: 17th-century-mechanical-calculators
Credit: Own work
Author: Edal Anton Lefterov
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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