spacer
space picture

spacer
 

School ergograph for drum recording.

Schulergograph für Trommelschreibung.

  Source   Zimmermann, E. 1923. Liste 33: Über Psychotechnik. Leipzig, Berlin view the source
  People  
  Sites  
  Related Literature  
  Comment  
  Description   School ergograph for drum recording. The slide S loaded by weight carries a rod, on which the pencil is fixed. The registration takes place on the horizontally positioned kymograph; 1,450 kg; without weights.
ISSN 1866-4784: reference - xlink