Dear all,
Thanks to the invaluable resources of archive.org, Fer de Vries' webpage on
the construction of a hemispherium could be reconstructed. For convenience
I uploaded it to: www.fransmaes.nl/zonnewijzers/downloads/hemisph.htm.
Best regards,
Frans Maes
On Mon, Sep 28, 2015 at 9:03 PM,
Thanks Frans. This is where the link to Fers's webpage should be. The files I
provided captured the text but not the two pictures of a plastic bowl
hemispherium with normal and sidereal hours. your use of the the archive source
provided these details. Thanks Dan for raising the question. We all
