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MEISSNER - RIETZ   ( 25 cm Scales )
Have a look at an Older Version (A)



MEISSNER KG, Dresden / (GDR) Germany               (1955)
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                                              VERSION (B)

S C A L E S   of  the   M E I S S N E R   »  R I E T Z  «
=========================================================
Front Side         [ inverse / RED ]            Back Side
=========================================================
( 0 ... 25 cm Ruler )

K       X3
A       X2
---------------------------------------------------------
B       X2                     S     sin(0.1X); cos(0.1X)
[R]     [1/X]                  ST    arc(0.01X)
C       X                      T     tan(0.1X); cot(0.1X)
---------------------------------------------------------
D       X
L       lgX

( 0 ... 10 " Ruler )

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 3 Versions in the Collection
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This Version (B) slide rule is made of mahogany.  Scales
are printed on celluloid veneer.  On its back side are
conversion tables.  It came in a brown leather case.

The base of the inner body is split ...

    

    ... The <1> Triangle means "1st Quality!"

The MAGNIFIER CURSOR »M25K« ,  made by MAUTNER / Dresden,
came in a case without lid - Now the LID is home-made ...

REMARK: This Magn.Cursor DOESN'T FIT IN THE OLDER(A)RIETZ
        but fits in Vers.(C) and also in model  DARMSTADT

The Newer (1957) Version (C)
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In contrary to the above MAHOGANY-RIETZ Vers.(B),  the
Vers.(C) is made of BEECHWOOD and the base of the inner
body is NOT SPLIT.  It has an  ACRYLIC CURSOR.  Both
features are also found in the model  DARMSTADT.

 

 

                   Historical Remarks ...
impressum:
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http://public.beuth-hochschule.de/~hamann        07/09/09