Albert Nestler, Lahr in Baden / Germany (1960) *********************************************************** SCALES of the NESTLER P O C K E T DARMSTADT Model 11D =========================================================== Front Side [ inverse / RED ] Back Side =========================================================== ( 0 ... 13 cm Ruler ) [P] [sqrt(1 - (0.1X)2)] K X3 A X2 ----------------------------------------------------------- B X2 LL1 exp(0.01X) [CI] [1/X] LL2 exp(0.1X) C X LL3 exp(X) ----------------------------------------------------------- D X T tan(0.1X) ; [cot(0.1X)] S sin(0.1X) ; [cos(0.1X)] REMARKS: =========================================================== This pocket slide rule came in a brown leather case. The glass cursor has 3 HAIRLINES: The UPPER-LEFT & CENTER are in the "Area/Diameter-Relation" - The UPPER-LEFT & -RIGHT are in the distance "185" =???= 1 Naut.Mile = 1.8520 km (because CENTER & UPPER-RIGHT are not in "KW/PS-Relation"!) Picture-Example: 3.14 [Miles] * 1.85 [km/Mile] = 5.81 [km] Historical Remarks ... impressum: *********************************************************** © C.HAMANN http://public.BHT-Berlin.de/hamann 05/21/10 |