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PICKETT   POCKET   20
( 5" / 12.5 cm Scales )



PICKETT & ECKEL, Chicago, Illinois / USA            (1950)
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SCALES of the  P O C K E T  ALL METAL  » BASIC «  Model 20
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                                        ( one-sided only )
  K        X3
  A        X2
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  B        X2
  T        tan(0.1X); cot(0.1X)
  S        sin(0.1X); cos(0.1X)
  CI       1/X
  C        X
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  D        X
  L        lgX

REMARKS:
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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:
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http://public.beuth-hochschule.de/~hamann         05/11/09