OTIS-KING Pocket-Calculator Model »L« ******************************************************** Carbic Ltd., London / England (1925) SN = T8156 Diameter: 1 1/2 " ( 3 cm ) Length: 6 " / 10 " ( 15 cm / 25 cm, extended ) 1st Log.Scale ( No.429, left of the black slider ) 2nd Log.Scale ( No.429, right of the black slider ) 3rd Lin.Scale ( No.430, hidden by the black slider ) Used like a Slide-Rule of Length 66" ( 168 cm ) ----------------------------------------------- 1st & 2nd Scale together for multiply & devide 1st & 3rd Scale together are a Logarithm-Table SHORT INSTRUCTION FOR ITS B A S I C CALCULATIONS ... ======================================================== LIST OF ABBREVIATIONS: US = Upper (2nd) Scale BX = Black slider with UI = Upper Indicator & LI = Lower Indicator LS = Lower (1st) Scale -------------------------------------------------------- MULTIPLICATION 2*3 = 6 Set LI of BX to X=2 on LS Set X=1 of US on UI Set BX with UI to X=3 on US Product: Read X=6 on LI === DIVISION 5/3 = 1.6666 Set BX with LI to X=3 on LS Set X=5 of US on UI Divident Set LI of BX to X=1 on LS ---(BX)--- = Quotient: Read X=1.6666 on UI Divisor ======== When BX is not movable, exchange LI(LS)/UI(US) or X=1/10 impressum: ******************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 02/25/10 |