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

SCALES of the FABER-CASTELL  » P O C K E T - DISPONENT «  Model 67/22
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Front Side      Scales in [RED] & {GREEN}                   Back Side
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( 0 ...  14 cm Ruler )

PERCENT-SCALE  -50% ..  33 1/3  .. 20 .. 0 .. 20 ..  33 1/3  .. +100%
DF             3.6*X    KZ:  K = Start-Kapital,  Z = Zinsen
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[CF]           [3.6*X]       T = Tage          Shilling, Penny, Pound
{CI}           {1/X}        p% = Percent            Conversion Scales
[C]            [X]           T = Tage          Pound, Shilling, Penny
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D              X             Z = Zinsen

R E M A R K S :                There are 2 Versions in the Collection
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The (DF),[CF]-Scales are folded at  3.6 * X  for Days-of-the-Year.

The formula & translation:

  Zinsen (in % ) = Z = ( K * p * n )/100 ;   n = Jahre = Tage/360

( Z = Interest; K = Capital; p = Interest Rate; n = Years; T = Days )

                                  Production Code = 11 65 = Nov. 1965

                         Historical Remarks ...
impressum:
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© C.HAMANN        http://public.BHT-Berlin.de/hamann         10/09/10