ARISTO-Werke Dennert & Pape, Hamburg / Germany        (1960)
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SCALES  of the ARISTO  POCKET  R I E T Z   Model 810  »PUCK«
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Front Side         [ inverse / RED ]               Back Side
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( 0 ...  10 cm Ruler )

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

R E M A R K S :                       ( No Year-Code found )
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This MINI-SR was NOT A TOY!  It came in a nice leather case.
To use the Trigonometric Scales, the slider has to be turned
and adjusted to  [ sin(90°) = 1 ;  tan(45°) = 1 ]

S keyed to A ;  T keyed to D

            Historical Remarks ...

                   Have a look at the MINI-SR from HEMMI ...
impressum:
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© C.HAMANN    http://public.BHT-Berlin.de/hamann    06/08/16