VEB MANTISSA, Dresden / (GDR) Germany (1975) ********************************************************** VERSION (B) SCALES of the MANTISSA » DARMSTADT II « Nr.1731523/4 ========================================================== Front Side [ inverse / RED ] Back Side ========================================================== K X3 [P] [sqrt(1 - (0.1X)2)] A X2 ST arc(0.01X) ---------------------------------------------------------- B X2 LL1 exp(0.01X) [CI] [1/X] LL2 exp(0.1X) C X LL3 exp(X) ---------------------------------------------------------- D X D X L lgX T tan(0.1X) S sin(0.1X) R E M A R K S : ( 1° = 60' ; 1' = 60" ) ========================================================== The TRIGONOMETRIC SCALES are divided in MINUTES & SECONDS There are 2 Versions Nr.1731523/4 in the Collection Newer Version (B) ----------------- It was found in a flea market "Sealed, New-In-the-Box". The CURSOR had changed and the booklet's HEADLINE and the LABEL on the back side of the brown cardboard case reads now » MANTISSA «. Older Version (A) The slide rule came in a brown cardboard case together with a booklet. Historical Remarks ... impressum: ********************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 09/24/07 |