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.
overall (case): 35 x 230 x 80 mm
- furnishing and equipment
- measuring device - instrument
- Phillips Auctioneers
- Permanent collection
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