A.W.Faber-Castell, Stein bei Nuernberg / Germany      (1953)
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                                                 VERSION (A)

S C A L E S  of the FABER-CASTELL  »DARMSTADT«  Model 111/54
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Front Side       [ inverse / RED ]                 Back Side
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( 0 ...  27 cm Ruler )

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 - (0.1X)2)]
S        sin(0.1X) ; [cos(0.1X)]
T        tan(0.1X) ; [cot(0.1X)]
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L        lgX

R E M A R K S :   There are 2 Model 111/54 in the Collection
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Older Version (A)
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Production Code = 53_8 = Aug. 1953

The slide rule has less scales in other sequence. It came in
a green cardboard case.  On the back are instructions how to
use the EXP-Scales.

Newer Version (B)
Production Code = 12_69 = Dec. 1969

This slide rule from 1969 has more scales in other sequence.
It is shielded in an acrylic box. It came with a ruler with
physical constants and conversion factors together with an
instruction booklet.

                    Historical Remarks ...
impressum:
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© C.HAMANN    http://public.BHT-Berlin.de/hamann    11/24/07