A.W.Faber-Castell, Stein bei Nuernberg / Germany      (1965)
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                                                 VERSION (A)

SCALES  of the  FABER-CASTELL  » SCHUL-RIETZ N « Model 57/88
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Front Side      [ inverse / RED ]         ( one-sided only )
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( 0 ...  27 cm Ruler )

   K        X3
   A        X2
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   B        X2
   L        lgX
   [CI]     [1/X]
   C        X
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   D        X
   S        sin(0.1X) ; [cos(0.1X)]
   ST       arc(0.01X)
   T1       tan(0.1X); [cot(0.1X)]
   T2       tan(X); [cot(X)]

R E M A R K S :    There are 2 Model 57/88 in the Collection
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Older Version (A)
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Production Code = 3 65 = March 1965

This slide rule is named  » SCHUL-RIETZ N «  on the right.
The model number is printed on the body under the slider.
Its cursor has RED MARKS.  It came in an acrylic case
together with an instruction booklet covering models
57/88 & 57/89 ( both front sides are the same ).

Newer Version (B)         NOT SHOWN
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Production Code = 11 71 = Nov. 1971
 
This slide rule has the same scales and model number as
Version (A) - But it is named  » RIETZ N «  only.  The model
number is printed left on the slider (the body is blank).
Its cursor has BLACK MARKS.  It came in a grey plastic case
together with a sheet with symbols, formulas and diagrams
to set theory and with the same booklet as Version (A). 

                     Historical Remarks ...
impressum:
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© C.HAMANN    http://public.BHT-Berlin.de/hamann    05/30/08