REISS, Bad Liebenwerda / (GDR) Germany (1968) *************************************************************** SCALES of the REISS (DECELITH) »DARMSTADT-RECORD« Model 3214 =============================================================== Front Side [ inverse / RED ] Back Side =============================================================== ( 0 .. 25 cm Ruler ) [P] [sqrt(1 - (0.1X)2)] S sin(0.1X) L lgX ST arc(0.01X) K X3 DF πX A X2 --------------------------------------------------------------- CF πX B X2 [CIF] [1/πX] [CI] [1/X] [CI] [1/X] C X C X --------------------------------------------------------------- D X D X T1 tan(0.1X) LL1 exp(0.01X) T2 tan(X) LL2 exp(0.1X) [DI] [1/X] LL3 exp(X) R E M A R K S : =============================================================== The slide rule came in a (taped) red plastic case. The same model was later under the logo » MANTISSA-RECORD « on the market ... Historical Remarks ... impressum: *************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 09/11/07 |