File:Megalethoscope.jpg

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Megalethoscope.jpg(653 × 490 pixels, file size: 297 KB, MIME type: image/jpeg)

Description

Ponti's Megalethoscope


Collection: Princeton University Library
Date
Source Self-photographed
Author Photo: Andreas Praefcke
Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
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June 2007

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Date/TimeThumbnailDimensionsUserComment
current16:23, 13 June 2007Thumbnail for version as of 16:23, 13 June 2007653 × 490 (297 KB)AndreasPraefcke{{Information |Description=Ponti's Megalethoscope <br />Collection: Princeton University Library |Source=own photograph |Date=June 2007 |Author=Andreas Praefcke |Permission= |other_versions= }} {{PD-self}} [[Category:Optical devices
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