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REISS - RIETZ   ( 25 cm Scales )
Have a look at a Newer Version (B)


 
REISS, Bad Liebenwerda / (GDR) Germany                   (1960)
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                                                    VERSION (A)

S C A L E S   of  the   R E I S S   LIGHT METAL   » R I E T Z «
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Front Side            [ inverse / RED ]               Back Side
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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) ; cot(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(")

There are 2 VERSIONS  »RIETZ«  in the Collection.
Both beautiful aluminum slide rules came in plastic cases.

                   Historical Remarks ...
impressum:
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http://public.beuth-hochschule.de/~hamann              02/23/07