SCIENTIFIC INSTRUMENTS CO., Berkeley, California / USA (1961) ********************************************************************** SN = 90133 Made in Japan by RELAY / RICOH S C A L E S of the LOG-LOG DECATRIG Model 1510 ====================================================================== Front Side [ inverse / RED ] Back Side ====================================================================== [LL1] [exp(-0.01X)] [LL0] [exp(-0.001X)] [LL2] [exp(-0.1X)] L lgX [LL3] [exp(-X)] K X3 DF πX A X2 ---------------------------------------------------------------------- CF πX B X2 [CIF] [1/πX] S sin(0.1X) ; [cos(0.1X)] ST arc(0.01X) [CI] [1/X] T tan(0.1X) ; [cot(0.1X)] C X C X ---------------------------------------------------------------------- D X D X LL3 exp(X) [DI] 1/X LL2 exp(0.1X) [P] [sqrt(1 - (0.1X)2)] LL1 exp(0.01X) LL0 exp(0.001X) R E M A R K S : ====================================================================== This model is made of bamboo with scales on celluloid veneer. Cursor windows have the scale symbols engraved. The SR has a "MADE IN JAPAN" imprint and came in a brown leather case with a clip and SIC-Logo. Historical Remarks ... impressum: ********************************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 07/11/11 |