previous <<==>> next

PICKETT   N3-ES   ( 10" / 25 cm Scales )



PICKETT & ECKEL, Chicago, Illinois / USA                    (1960)
******************************************************************

SCALES of the  » ALL METAL POWER LOG EXPONENTIAL «     Model N3-ES
==================================================================
Front Side               [ inverse / RED ]               Back Side
==================================================================

                                   LL0     exp(+0.001X .. +0.01X);
sqrt(X<  ODD-No-Digits >)          [LL0]  [exp(-0.001X .. -0.01X)]
sqrt(X< EVEN-No-Digits >)          LL1       exp(+0.01X .. +0.1X);
K                          X3      [LL1]    [exp(-0.01X .. -0.1X)]
A                          X2      DF                           πX
------------------------------------------------------------------
B                          X2      CF                           πX
ST                 arc(0.01X)      [CIF]                    [1/πX]
S      sin(0.1X); [cos(0.1X)]
T1                  tan(0.1X)      LN                          lnX
T2                     tan(X)      L                           lgX
[CI]                    [1/X]      [CI]                      [1/X]
C                           X      C                             X
------------------------------------------------------------------
D                           X      D                             X
[DI]                    [1/X]      LL2           exp(+0.1X .. +X);
3rdRoot(X< 1;4;7 Digits,.. >)      [LL2]        [exp(-0.1X .. -X)]
3rdRoot(X< 2;5;8 Digits,.. >)      LL3            exp(+X .. +10X);
3rdRoot(X< 3;6;9 Digits,.. >)      [LL3]         [exp(-X .. -10X)]

R E M A R K S :
==================================================================
It came in a heavy-used leather case - but the aluminum slide rule
was in good conditions.  With its 32 scales it belongs to the most
»loaded« slide rules!

This slide rule has the typical  "Pickett-Yellow" body:  The "-ES"
in the model number means  "Eye-Saver";  Models with the "-T"-Ext.
(for "Traditional") have a white body.

                     Historical Remarks ...
impressum:
******************************************************************
© C.HAMANN    http://public.beuth-hochschule.de/~hamann   04/04/16