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NORMA   GRAFIA   ( 15 cm  Diameter )
Have a look at the NORMA MERKURIA 190



NORMA / Germany                                          (1960)
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SCALES of the NORMA » GRAFIA «  CIRCULAR SLIDE RULE   Model 190
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                                             ( one-sided only )

   X       with lots of CONVERSION MARKS       outer circles
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   X       with lots of CONVERSION MARKS       inner circles

REMARKS:
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» Model 190 «  because the  OVER ALL DIAMETER  equals  190 mm
The length of the scale is:  15 cm * π  =  47 cm  =  18 1/2 "

On the back side of the plastic cover is a SHORT INSTRUCTION,
refering to the "Grosse Gebrauchsanleitung" (= large manual )
of the  » NORMA-RECHENSCHEIBE FUER DIE GRAFISCHE INDUSTRIE «

Historical Remarks ...

P O S T S C R I P T :
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Found  a  2nd  NORMA  »GRAFIA«  Model 190    WITHOUT CURSOR ...



                          ... made a MARKER OUT OF A PAPER CLIP
impressum:
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© C.HAMANN  http://public.beuth-hochschule.de/~hamann  10/10/08