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Publication of GB658170ApublicationCriticalpatent/GB658170A/en
658,170. Electrical measuring instruments. S.E.D.E.M. (SOC. D'ETUDE ET DE DISTRIBUTION DE MATERIEL ELECTROMECANIQUE). July 15, 1949, No. 18686. Convention date, July 20, 1948. [Class 37] A moving coil instrument comprises a magnet 1 having polepieces 2, 3 and contained within a moving coil 4, the whole being contained within a magnetically permeable casing having but one aperture 11 through which protrudes the spindle on which a needle 5 may be detachably fixed. The pivot bearings are adjustable to position the moving coil as required in the magnetic gap.