CONCISE, Tokyo / Japan                              (1970)
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                                               VERSION (B)

SCALES of the CIRCULAR SLIDE RULE » CONCISE  Model (28N) «
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[ inverse / RED ]
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   D       X                              outer circle
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   C       X                              inner circles
   [CI]    [1/X]
   A       X2
   K       X3

R E M A R K S :     There are 2 Versions in the Collection
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On the back side of the slide rule is a circular reference
table with physical data - different design as Version(A).
The SR came in a black soft-plastic case with a booklet.

Have a look at this Older Version

                  Historical Remarks ...
impressum:
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© C.HAMANN   http://public.BHT-Berlin.de/hamann   07/24/10