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FREDERICK POST   » 1452P »   ( 10" / 25 cm Scales )



FREDERICK POST CO., Chicago, Illinois / USA           (1970)
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S C A L E S  of  the   P O S T   » MANNHEIM «    Model 1452P
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Front Side         [ inverse / RED ]               Back Side
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( 0 ...  10" Ruler )
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A       X2
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B       X2                     S       sin(0.1X); sin(0.01X)
[CI]    [1/X]                  L       lgX
C       X                      T       tan(0.1X)
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D       X
K       X3
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( 0 ...  25 cm Ruler )

R E M A R K S :                   (  1° = 60' ;   1' = 60" )
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The  TRIGONOMETRIC  SCALES  are  in  MINUTES(') & SECONDS(")

S keyed to A/B ;  T keyed to C/D

This slide rule is made of white plastic.  Its back side has
conversion tables and constants - given as fractions. Screws
on the back side allow adjustment of the sliding friction.
It came in a black cardboard case with an instruction sheet.

                   Historical Remarks ...
impressum:
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http://public.beuth-hochschule.de/~hamann           04/02/10