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FABER-CASTELL   DARMSTADT   ( 50 cm Scales )
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A.W.Faber-Castell, Stein bei Nuernberg / Germany          (1974)
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                                                     VERSION (B)

S C A L E S  of  the  FABER-CASTELL    » DARMSTADT «  Model 4/54
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Front Side          [ inverse / RED ]                  Back Side
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( 0 ...  50 cm Ruler )

L        lgX
----------------------------------------------------------------
K        X3
A        X2
----------------------------------------------------------------
B        X2                                   LL1     exp(0.01X)
[CI]     [1/X]                                LL2     exp(0.1X)
C        X                                    LL3     exp(X)
----------------------------------------------------------------
D        X
[P]      [sqrt(1 - X2)]
----------------------------------------------------------------
S        sin(0.1X) ; [cos(0.1X)]
T        tan(0.1X) ; [cot(0.1X)]

R E M A R K S :         There are 2 Model 4/54 in the Collection
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Newer Version (B)
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Production Code = 11 74 = Nov. 1974

This beautiful  historic wooden model  came in a green cardboard
case.  A  cm/inch  RULER  with physical constants and conversion
factors belongs to the set - together with a little SCREW DRIVER
( with instruction )  for the screws on the  S/T  side to adjust
the sliding friction.

Older Version (A)
-----------------
Production Code = 4_62 = April 1962

This SR has the same scales, BUT engraved as "Ladders" ...

 

                    Historical Remarks ...
impressum:
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© C.HAMANN   http://public.beuth-hochschule.de/~hamann   10/05/12