FEINMESSINSTITUT JOE KLAWUN, Berlin / Germany (1933) ************************************************************************** S C A L E S of the J O E K L A W U N ( Merchant ) Model 333/S ========================================================================== Front Side Scales in [RED] & {GREEN} Back Side ========================================================================== ( 0 ... 27 cm Ruler ) n3 X3 (DF) 3.6*X KZ: K = Start-Kapital, Z = Zinsen -------------------------------------------------------------------------- [CF] [3.6*X] T = Tage S sin(0.01X); sin(0.1X) {Val., p%} {1/X} Val.; p% = Prozentsatz L lgX [E, T] [X] E ; T = Tage T tan(0.1X) -------------------------------------------------------------------------- n, V, Z X V ; Z = Zinsen n2 X2 -------------------------------------------------------------------------- ( 0 ... 10" Ruler ) R E M A R K S : ========================================================================== The SINUS-MARK on its Back-Side is useless !!! TO USE SINUS, the slider has to be turned - SINUS is keyed to the n2 -Scale on the lower body! The CURSOR's Outer-HAIRLINES show AREA .. PS(=HP) on the n2 -Scale. This » Merchant SR « is made of mahagony with scales on celluloid veneer. On its back side are instructions how to use a slide rule. On its body is engraved: » No.333/S JOE KLAWUN Berlin-Charlottenburg « . It came in a black cardboard case with the only printings of BLIND TRIANGLES: This too may be the indication for, that the slide rule was made by N E S T L E R. 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] - 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 Historical Remarks ... impressum: ************************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 11/11/09 |