SCIENTIFIC INSTRUMENTS CO., Berkeley, California / USA          (1961)
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                               Made in Japan  by  RELAY (= Model 551 )

S C A L E S  of  the   P O C K E T   LOG-LOG  DECATRIG      Model 5510
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Front Side                 [ inverse / RED ]                 Back Side
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[LL1]   [exp(-0.01X)]                  [LL0]   [exp(-0.001X)]
[LL2]   [exp(-0.1X)]                   L       lgX
[LL3]   [exp(-X)]                      K       X3
DF      πX                             A       X2
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CF      πX                             B       X2
[CIF]   [1/πX]                         S       sin(0.1X) ; [cos(0.1X)]
                                       ST      arc(0.01X)
[CI]    [1/X]                          T       tan(0.1X) ; [cot(0.1X)]
C       X                              C       X 
----------------------------------------------------------------------
D       X                              D       X
LL3     exp(X)                         [DI]    1/X
LL2     exp(0.1X)                      [P]     [sqrt(1 - (0.1X)2)]
LL1     exp(0.01X)                     LL0     exp(0.001X)

R E M A R K S :
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This model is made of bamboo with scales on celluloid veneer.  Cursor
windows have the scale symbols engraved.  The slide rule came in a
brown leather case with a clip and SIC-Logo & "Japan" imprinted.

                       Historical Remarks ...
impressum:
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© C.HAMANN        http://public.BHT-Berlin.de/hamann          06/27/09