REISS, Bad Liebenwerda / (GDR) Germany                   (1965)
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SCALES  of the  REISS  DECELITH  P O C K E T  »RIETZ«  Mod.3212
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Front Side            [ inverse / RED ]               Back Side
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( 0 ...  13 cm Ruler )

K       X3
A       X2
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B       X2                           S    sin(0.01X); sin(0.1X)
[CI]    [1/X]
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(")

S keyed to A/B ;  T keyed to C/D

This Pocket-SR came in a green leather case with an »EAW«-Logo.

                    Historical Remarks ...
impressum:
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© C.HAMANN     http://public.BHT-Berlin.de/hamann      09/22/10