File:Model 4180 Fraction adder-IMG 5826-white.jpg

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Description Keuffel and Esser Model 4180 Fraction adder slide rule. On display at the MIT Museum.
Date Taken on 11 September 2019, 21:20 (according to Exif data)
Source Own work
Author Rama
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attribution share alike
This file is licensed under the Creative Commons Attribution-ShareAlike 3.0 France license.
Attribution: Rama
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w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 France license.
Attribution: Rama
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
CeCILL This work is free software; you can redistribute it or modify it under the terms of the CeCILL. The terms of the CeCILL license are available at www.cecill.info.
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Date/TimeThumbnailDimensionsUserComment
current19:06, 11 April 2020Thumbnail for version as of 19:06, 11 April 20203,500 × 3,500 (1.32 MB)Rama (talk | contribs){{Information |Description = Keuffel and Esser Model 4180 Fraction adder slide rule. On display at the MIT Museum. |Source = {{own}} |Date = |Author = {{u|Rama}} |Permission = {{self|Cc-by-sa-3.0-fr|Cc-by-sa-2.0-fr|CeCILL|attribution=Rama}} |other_versions = }} Category:MIT Slide Rule Collection Category:Keuffel and Esser

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