Apparatus for testing keenness of eyesight. After Galton, by Cambr. Scient. Instr. Co. See also <link ref="tec3099">another figure</link> of this instrument on another photograph from Harvard. Galton's Apparatus for testing keenness of eyesight is also described by the Cambridge Scientific Instrument Company, in <link ref="lit38593" page="p0006" mk="0.3251/0.8433">"A descriptive list of anthropometric apparatus"</link> (1887). For an updated version, see <link href="http://www.sil.si.edu/digitalcollections/trade-literature/scientific-instruments/files/51682/imagepages/image116.htm">Cambridge, 1899</link>. Apparatus for testing keenness of eyesight. After Galton, by Cambr. Scient. Instr. Co.

Dublin Core Export

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  <dc:description>Comment Rand Evans: M81 Spectrum recombination.
http://vlp.mpiwg-berlin.mpg.de/library/data/lit8140/index_html?pn=14&amp;ws=3&amp;mk=0.0554/0.1334&amp;wid=digi_1445
http://vlp.mpiwg-berlin.mpg.de/library/data/lit8140/index_html?pn=11&amp;ws=3&amp;mk=0.2761/0.6134&amp;wid=digi_6467 
Device not found in Kohl-catalogues (in "Optik", p.385-Ende). 
Label seems to show "Cambridge Scientific Instument Company" and NOT Kohl. Not found in Cambridge Catalogue  1913 (http://www.astropa.unipa.it/biblioteca/Strumenti/strum_list.html), neither in other Queen-Catalogues (1874, 1883, 1884).
Comment II: IMG 30049  Instrument for the recombination of parts of the solar spectrum.  I agree. The label on the instrument in the new, clearer photo, shows that this is made by Cambridge 
Scientific Instrument Company and not by max Kohl as Muensterberg’s list indicates.   I 
have not found this item in any of Cambridge Scientific Instrument Catalogues, however. 
Unfortunately the catalogue in the Smithsonian collection that may have it is not yet 
available.
Comment III: The apparatus I had had identified as Nr. 81, Apparatus for reconstituting
the solar spectrum is not. It is M 91 Galton's Apparatus for testing keenness of eyesight.
It is described and illustrated in Francis Galton, On the Anthropometric Laboratory
at the Late International Health Exhibition. The Journal of the Anthropological
Institute of Great Britain and Ireland, Vol. 14. (1885), pp. 205-221. [http://galton.org/bib/JournalItem.aspx_action=view_id=150]
The device is described in Cambridge Scientific Instrument Co. 1883 [corr.: 1887] catalogue. It is the
earlier form of the apparatus and not the updated version described in Cambridge
Scientific Instrument Co's 1899 catalogue.
[p.108- description only: http://www.sil.si.edu/digitalcollections/trade-literature/scientific-instruments/files/51682/imagepages/image116.htm und p. 6 - description only- in kajakruse/RAND_EVANS/catalogues/Galton-1887-anthro-apparatus.pdf . - veröffentlichen?]</dc:description>
  <dc:identifier>https://vlp-new.ur.de/images/img30049</dc:identifier>
  <dc:identifier>oai:vlp-new.ur.de:img30049</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>https://creativecommons.org/licenses/by-nc/4.0/</dc:rights>
  <dc:source>https://vlp-new.ur.de/records/lit38688</dc:source>
  <dc:subject>technology</dc:subject>
  <dc:title> Apparatus for testing keenness of eyesight. After Galton, by Cambr. Scient. Instr. Co.   See also &lt;link ref="tec3099"&gt;another figure&lt;/link&gt; of this instrument on another photograph from Harvard.  
Galton's Apparatus for testing keenness of eyesight is also described by the Cambridge Scientific Instrument Company, in &lt;link ref="lit38593" page="p0006"  mk="0.3251/0.8433"&gt;"A descriptive list of anthropometric apparatus"&lt;/link&gt; (1887).

For an updated version, see  &lt;link href="http://www.sil.si.edu/digitalcollections/trade-literature/scientific-instruments/files/51682/imagepages/image116.htm"&gt;Cambridge, 1899&lt;/link&gt;. Apparatus for testing keenness of eyesight. After Galton, by Cambr. Scient. Instr. Co. </dc:title>
  <dc:type>photography b/w</dc:type>
</oai_dc:dc>