VEB MANTISSA, Dresden / (GDR) Germany (1973) ************************************************************ SCALES of the MANTISSA » VARIANT II « Nr.1731573/4 ============================================================ Front Side [ inverse / RED ] Back Side ============================================================ ( 0 ... 25 cm Ruler ) ST arc(0.01X) T tan(0.1X) K X3 L lgX A X2 DF πX ------------------------------------------------------------ B X2 CF πX [CI] [1/X] [CIF] [1/πX] C X C X ------------------------------------------------------------ D X D X [P] [sqrt(1 - (0.1X)2)] LL1 exp(0.01X) S sin(0.1X) LL2 exp(0.1X) LL3 exp(X) R E M A R K S : ( 1° = 60' ; 1' = 60" ) ============================================================ The TRIGONOMETRIC SCALES are divided in MINUTES & SECONDS Historical Remarks ... This slide rule was on the market before with the same MODEL NUMBER and the same INSTRUCTION as »MEISSNER-VARIANT-II« impressum: ************************************************************ © C.HAMANN http://public.BHT-Berlin.de/hamann 09/10/09 |