PICKETT & ECKEL, Chicago, Illinois / USA            (1950)
**********************************************************

SCALES of the  P O C K E T  ALL METAL  » BASIC «  Model 20
==========================================================
                                        ( one-sided only )
  K        X3
  A        X2
----------------------------------------------------------
  B        X2
  T        tan(0.1X); cot(0.1X)
  S        sin(0.1X); cos(0.1X)
  CI       1/X
  C        X
----------------------------------------------------------
  D        X
  L        lgX

REMARKS:
==========================================================
This old model is made of sheet metal.  The body is cut &
folded out of one piece.  The slider is mounted on a broad
sheet sliding in the body frame.  The SR came in a brown
plastic case with a metal clip for the shirt-pocket.

                   Historical Remarks ...
impressum:
**********************************************************
© C.HAMANN   http://public.BHT-Berlin.de/hamann   05/11/09