A.W.Faber-Castell, Stein bei Nuernberg / Germany (1964) ********************************************************* VERSION (B) S C A L E S of the FABER-CASTELL » DUPLEX « Model 2/82 ========================================================= Front Side [ inverse / RED ] Back Side ========================================================= L lgX [LL03] [exp(-X)] T1 tan(0.1X) ; [cot(0.1X)] [LL02] [exp(-0.1X)] T2 tan(X) ; [cot(X)] [LL01] [exp(-0.01X)] A X2 K X3 --------------------------------------------------------- B X2 K' X3 [BI] [100/X2] C X [CI] [10/X] [CIF] [10/πX] C X CF πX --------------------------------------------------------- D X DF πX ST arc(0.01X) LL1 exp(0.01X) S sin(0.1X) ; [cos(0.1X)] LL2 exp(0.1X) [P] [sqrt(1 - (0.1X)2)] LL3 exp(X) R E M A R K S : There are 2 Model 2/82 in the Collection ========================================================= Newer Version (B) ----------------- Production Code = 1_?? The slide rule has scales in other sequence and NO RULERS on its body. It is shielded in an acrylic box. It came with an instruction booklet and a separate ruler with physical constants and conversion factors in the box. Older Version (A) Production Code = 10_?? This slide rule came in a green cardboard case. Historical Remarks ... impressum: ********************************************************* © C.HAMANN http://public.BHT-Berlin.de/hamann 04/19/09 |