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DIWA   POCKET-RIETZ   ( 12.5 cm Scales )



DIWA, Gentofte / Denmark                             (1960)
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S C A L E S  of the  D I W A   POCKET-RIETZ     Model 601-1
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Front Side          [ inverse / RED ]             Back Side
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( 0 ...  11 cm  /  0 ... 4"  Ruler )

K        X3
A        X2
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B        X2                                S     sin(0.1X)
[CI]     [1/X]                             ST    arc(0.01X)
C        X                                 T     tan(0.1X)
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D        X
L        lgX

REMARKS:
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This Pocket SR came in a brown leather case together with
an instruction sheet in a blue box.

Historical Remarks ...

The print on the back side of the leather cover says:

    DE LAVAL      \    DELTEX DIVISION
    TURBINE INC.   \   A NEW DIMENSION IN SERVICE 

impressum:
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http://public.beuth-hochschule.de/~hamann          11/23/07