A.W.Faber-Castell, Stein bei Nuernberg / Germany (1973) *********************************************************** SCALES of the FABER-CASTELL CIRCULAR SLIDE RULE Model 8/10 =========================================================== K X3 A X2 L lgX D X outer circles ----------------------------------------------------------- C X inner circles [CI] [1/X] [ inverse / RED ] B X2 T1 tan(0.1X) ; [cot(0.1X)] T2 tan(X) ; [cot(X)] S sin(0.1X) ; [cos(0.1X)] ST arc(0.01X) REMARKS: =========================================================== The Scales C and D of 8.5 cm ( 3 3/8" ) diameter have the length of 27 cm ( >10" ) On its BACK-SIDE are conversion tables and instructions for Mult./Div. usage. The SlideRule came in a circular leather case (w.zipper) with an (8 p.) instruction booklet. Production Code = ??? Historical Remarks ... impressum: *********************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 12/23/06 |