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ARISTO - RIETZ   ( 25 cm Scales )
Have a look at the Older Version (A)



ARISTO-Werke Dennert & Pape, Hamburg / Germany     (1966)
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                                              VERSION (B)

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

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

Newer Version (B)
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Production Code = GFF12 = Geretsried, 1966, Lot 12

This slide rule is mounted on an acrylic ruler body
and came in a hard-cover case together with a 2-sided
laminated conversion table » Tabelle A, Okt.1962 «

Have a look at the Older Version (A)

                     Historical Remarks ...
impressum:
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http://public.beuth-hochschule.de/~hamann        12/12/08