Allbrit fixed index compensating polar planimeter with the wrong weighted arm

Made:
1974-1976 in London
manufacturer:
W F Stanley and Company Limited
Allbrit [fixed index] compensating polar planimeter with the

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Allbrit [fixed index] compensating polar planimeter with the
Science Museum Group
© The Board of Trustees of the Science Museum

Allbrit [fixed index] compensating polar planimeter with the wrong weighted arm, spacer bar and wooden case by Stanley, London. Calibrated for Imperial Measure, model A8001, with, missing magnifier and serial number 41270.

Details

Category:
Mathematics
Object Number:
2000-168
Materials:
brass, plastic, wood and complete
Measurements:
overall (case): 35 x 230 x 80 mm
type:
planimeter
credit:
Phillips Auctioneers