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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
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K X3
A X2
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B X2 LL1 exp(0.01X)
[CI] [1/X] LL2 exp(0.1X)
C X LL3 exp(X)
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D X
[P] [sqrt(1 - X2)]
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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)
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Production Code = 4 62 = April 1962
This SR has the same scales, BUT engraved as "Ladders" ...
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