ARISTO-Werke Dennert & Pape, Hamburg / Germany     (1959)
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                                              VERSION (A)

S C A L E S  of  the    A R I S T O   »RIETZ«    Model 99
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Front Side    [ inverse / RED ]                 Back Side
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( 0 ...  28 cm 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
                                     ( 0 ...  11" Ruler )

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

Production Code = G5912 = Geretsried, 1959, Lot 12

This slide rule came in a cardboard case together with a
2-sided laminated conversion table »Tabelle A, Okt.1959«

Have a look at a Newer Version (B)

                       Historical Remarks ...
impressum:
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© C.HAMANN  http://public.BHT-Berlin.de/hamann   02/23/07