S C A L E S  of  the   R I E T Z   » Made in USA «   (1960)
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Front Side                                        Back Side
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A       X2
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B       X2                    S       sin(0.01X); sin(0.1X)
CI      1/X                   L       lgX
C       X                     T       tan(0.1X)
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D       X

R E M A R K S :                  (  1° = 60' ;   1' = 60" )
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The TRIGONOMETRIC SCALES  are  in   MINUTES(') & SECONDS(")
S keyed to A/B ;  T keyed to C/D
To use the Back-Scales, the slider has to be turned.

The slide rule is made of mahogany with scales on celluloid
veneer.  On the back are conversion tables and constants -
given as fractions   ??? - same as (eg.)  K&E 4056  - ???

It came in a black artificial leather case with no cursor.
The cursor is replaced with an unknown frame. The window is
made of PVC from a CD case.  The hairline is made with a
»X-ACTO« and colored with a marker.  Because the slider was 
loose, a cardboard strip is glued on top of the metal body.

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