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REISS - DARMSTADT   ( 25 cm Scales )



REISS, Bad Liebenwerda / (GDR) Germany                (1955)
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                                                 VERSION (A)

SCALES of the  R E I S S  LIGHT METAL  » D A R M S T A D T «
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Front Side            [ inverse / RED ]            Back Side
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K        X3                    [Cos]     [sqrt(1 - (0.1X)2)]
A        X2                    ST        arc(0.01X)
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B        X2                    LL1       exp(0.01X)
[CI]     [1/X]                 LL2       exp(0.1X)
C        X                     LL3       exp(X)
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D        X                     S         sin(0.1X)
L        lgX                   T         tan(0.1X)

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  N E W E R  V E R S I O N S  in  the  Collection:
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Version (B1) 1970
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The BODY-ENDS are made different:  Instead of glued blocks
under the scales, now the scales are embedded in the metal
ends and fixed with four metal pins:

Version (B2) 1975
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Additional to new BODY-ENDS, also the CURSOR is different:

                   Historical Remarks ...
impressum:
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http://public.beuth-hochschule.de/~hamann           08/21/09