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FABER-CASTELL » DISPONENT « 1/22 & 11/22
( 25 cm Scales )
A.W.Faber-Castell, Stein bei Nuernberg / Germany (1951)
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VERSION (B)
S C A L E S of the FABER-CASTELL » DISPONENT « Model 1/22 HL
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Front Side Scales in [RED] & {GREEN} Back Side
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( 0 ... 27 cm Ruler )
... M A R K S for non-metric conversions ...
(DF) 3.6*X KZ: K = Start-Kapital, Z = Zinsen
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[CF] [3.6*X] T = Tage (LL1) exp(0.01X)
(LL2) exp(0.1X)
{CI} {1/X} Val.; p% = Prozentsatz p% = Prozentsatz
[C] [X] E ; T = Tage (C) X
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(D) X V ; Z = Zinsen
(L) lgX
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Shilling (s/£) Pound & Penny (d/£) Pound Conversion Scales
R E M A R K S : There are 2 Model 1/22 in the Collection
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To use the LL-Scales from the back side, the slider has to be turned.
Newer Version (B) Model 1/22 HL
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Production Code = 51_10 = Oct. 1951
This »DISPONENT« (=Merchant) Slide Rule is made of pearwood with
scales on celluloid veneer and it came with a magnifying cursor.
On the BACK SIDE are conversion tables and how to calculate interest.
The (DF),[CF]-Scales are folded at 3.6 * X for Days-of-the-Year.
Here the (German-) named scales are marked with their common symbols
in brackets: (DF),[CF],{CI},[C],(D),(L). 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 )
E = Einkaufspreis ( = Wholesale Price )
V = Verkaufspreis ( = Retail Price ) Val. = Valuta = Currency
The Older Version (A) Model 1/22 has the same scales,
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but an interesting CURSOR (easy to clean every corner!)
Production Code = 41_8 = Aug. 1941
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Model 11/22 has the same scales,
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but another CURSOR
Production Code = 46_6 = Juni 1946
