Soemtron ETR224 Calculator Gallery

All unmarked images ©2007- www.soemtron.org

Only 526 Soemtron ETR224 printing calculators were made during the units six year production between 1968 and 1974.  By modern standards they are extremely large and cumbersome, but very typical of their age - the 1960s.  This section shows a few views of a typical Soemtron ETR224, of which we believe that there are only four left in the world -

  1. A partially working machine in the Historisch-technisches Museum in Sömmerda.
  2. Our machine currently undergoing restoration in the www.soemtron.org collection.
  3. One in the hands of a private collector in Sömmerda.
  4. And the fourth machine in the Museum für Historische Bürotechnik in Naunhof.

To date we have found that very little information, if any, exists about the Soemtron ETR224 and certainly no technical information appears to have survived at all.

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If you have any further historical information, circuits, drawings, photographs, data or manuals about the Soemtron ETR220, 221, 222 and 224 or their manufacture, test equipment (Prüfgeräte) or you just know more about the Soemtron companies in general then please let us know, contact us.

Currently only four Soemtron ETR224's are known to remain in existence, click image for a larger version
Museum ETR224
One of only four remaining Soemtron ETR224's in existence, click image for a larger version
 
Currently only four Soemtron ETR224's are known to remain in existence, click image for a larger version
Inside the ETR224
Photos ©2009 Rüdiger Kurth and ©2009- www.soemtron.org
(Click an image for a larger version)

We have started the restoration of our ETR224, which we expect to take about a year, with progress documented in the pages linked below.  Like the 220 pages we hope that the information gathered from this process will evolve into a full technical documentation set for the Soemtron ETR224.

  • Various photos of our Soemtron ETR224 before restoration
  • Photos of the restoration progress.

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