A.W.Faber-Castell, Stein bei Nuernberg / Germany      (1969)
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SCALES  of the  FABER-CASTELL    » COLUMBUS «    Model 57/86
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( 0 ...  27 cm Ruler )                    ( one-sided only )

   A        X2
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   B        X2
   C        X
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   D        X

REMARKS:
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On the back side of this "low cost" slide rule are examples
for multiplication, division, squaring & root extraction.
The  » COLUMBUS 57/86 «  came in an acrylic case together
with the booklet » Rechenstab Fibel « - This booklet is also
for the slide rule  » RIETZ 57/87 «

Historical Remarks ...
                         Production Code = 4 69 = April 1969
impressum:
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© C.HAMANN    http://public.BHT-Berlin.de/hamann    02/15/08