Mosso’s ergograph, device for measuring human muscles, depicted in Charles Verdin’s catalogs (Verdin, 1890, p. 61; 1904, p. 36)
Charles Verdin, French manufacturer of precision instruments and their catalogues, 7 rue Linné Paris, lived 1848-1907 <a rel="nofollow" class="external free" href="https://bibnum.explore.psl.eu/s/psl/ark:/18469/1q2m7">https://bibnum.explore.psl.eu/s/psl/ark:/18469/1q2m7</a>
<p><a rel="nofollow" class="external text" href="https://www.cairn.info/revue-l-annee-psychologique1-2017-3-page-311.htm">Ergographs and dynamographs : New devices at the turn of the century for the measurement of muscular fatigue and endurance</a>, Serge Nicolas, Dalibor Vobořil
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Dans <a href="https://en.wikipedia.org/wiki/L%E2%80%99Ann%C3%A9e_psychologique" class="extiw" title="w:L’Année psychologique">L’Année psychologique</a> 2017/3 (Vol. 117), pages 311 à 349. Figure shows Mosso’s ergograph depicted in Verdin’s catalogs (Verdin, 1890, p. 61; 1904, p. 36)