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HEMMI   259   ( 25 cm Scales )



HEMMI SLIDE RULE CO. LTD., Tokyo / Japan                      (1954)
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S C A L E S   of  the  Bamboo - Based    H E M M I    Model  » 259 «
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Front Side                [ inverse / RED ]                Back Side
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L          lgX                     [LL1]      [exp(0.01X)]
K          X3                      [LL2]      [exp(0.1X)]
                                   [LL3]      [exp(X)]
DF         πX                      A          X2
--------------------------------------------------------------------
CF         πX                      B          X2
[CIF]      [1/πX]                  T; [T]     tan(0.1X); [tan(X)]
                                   S          sin(0.1X); [cos(0.1X)]
[CI]       [1/X]                   ST         arc(0.01X)
C          X                       C          X
--------------------------------------------------------------------
D          X                       D          X
LL0        [exp(0.001X)]           LL3        exp(X)
[LL0]      [exp(0.001X)]           LL2        exp(0.1X)
                                   LL1        exp(0.01X)

REMARKS:
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ATTENTION:   Scale  [tan(X)]  refers to the reciprocal  [CI]  scale.

This SR came in excellent shape in a "stressed" cardboard case.  The
INSTRUCTION BOOK of 110 pages refer also to other HEMMI Slide Rules. 

HEMMI introduced a year code, starts with  1950 = "A" ...   and the
month code starts with  January = "A" ...
This slide rule has the code "EH", means it is made in Aug. 1954.

                   Historical Remarks ...
impressum:
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© C.HAMANN    http://public.beuth-hochschule.de/~hamann     07/13/12