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MANTISSA   RIETZ
( 25 cm Scales )



VEB MANTISSA, Dresden / (GDR) Germany                 (1972)
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                                                 VERSION (A)

S C A L E S  of the  M A N T I S S A  » RIETZ «   Nr.1731511
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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)
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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

To read the Trigonom. Scales,  the SR had to be  turned and
adjusted. It came in a grey cardboard case with instruction.

A NEWER VERSION (B) has a DIFFERENT CURSOR ...
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The cursor is glued together and not removable for cleaning!

  

                   Historical Remarks ...
impressum:
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http://public.beuth-hochschule.de/~hamann           10/11/10