Image: Detail of a Roth Calculating machine
Size of this preview: 800 × 510 pixels. Other resolutions: 320 × 204 pixels | 1,024 × 653 pixels.
Original image (1,024 × 653 pixels, file size: 420 KB, MIME type: image/png)
Description: Detail of an early calculating machine invented by Didier Roth around 1840. This machine is a direct descendant of Pascal's Calculator.
Title: Detail of a Roth Calculating machine
Credit: Own work
Author: Ezrdr
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: https://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes
Image usage
The following page links to this image:
All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise.
