T E C H N I C A L   D A T A      of the  W I C H M A N N  PLANIMETER
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Model 1192    Gebr. WICHMANN GmbH / Germany    ( 1922 )    SN = 3993

Length = 20 cm     1:1000  /  335.1  /  10 qm = 10 qmm  on scale 1:1
                                    ...
                   1:5000  /  133.6  / 100 qm =  4 qmm

                     THEORY OF PLANIMETERS
impressum:
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© C.HAMANN        http://public.BHT-Berlin.de/hamann        05/28/10