A.W.Faber-Castell, Stein bei Nuernberg / Germany (1972) ************************************************************ SCALES of the FABER-CASTELL » NOVO-MENTOR « Model 52/81 ============================================================ FRONT SIDE [ inverse / RED ] BACK SIDE ============================================================ A X2 L lgX PERCENT-SCALE T1 tan(0.1X); [cot(0.1X)] K|Z DF πX T2 tan(X); [cot(X)] ------------------------------------------------------------ T CF πX S' sin(0.1X); [cos(0.1X)] [CIF] [1/πX] [p%] [CI] [1/X] [CI] [1/X] T C X C X ------------------------------------------------------------ Z D X D X K X3 S sin(0.1X); [cos(0.1X)] ST arc(0.01X) REMARKS: ============================================================ This slide rule came in a grey plastic case together with a sheet with symbols, formulas and diagrams to set theory. This slide rule is a "Two-In-One", because it has special marks on its cursor and scales included to be a "Merchant's" as well as an "Engineer's Slide Rule". Historical Remarks ... Production Code = 5 72 = May 1972 impressum: ************************************************************ © C.HAMANN http://public.BHT-Berlin.de/hamann 10/23/07 |