Signedon telescopic tube: H. Elbs, Freiburg, iB., No. 155
FunctionTo study visual sensations with colors.
Historical AttributesThis instrument is found in Hugo Münsterberg's 1893 Psychological Laboratory of Harvard University document. It is thus listed: "77. Apparatus for mixing colors by the combination of colored gelatine papers, After Münsterberg, by Elbs, Freiburg. $20."
See online reproduction here.
Primary SourcesHugo Münsterberg, "Psychological Laboratory of Harvard University," pamphlet of 1893. See Harvard University Archives HUF 715.93.72