Abstract: An electromagnetic compensating balance for the measurement of forces having a permanent magnet circuit assembly with an annular enclosed housing and with a central core defining a narrow annular air gap between a portion of the housing and core, and having a movable bobbin concentrically arranged around the core with a coil located in the air gap, the bobbin having end portions projecting above and below the housing which are connected to leaf support members for independent support of the bobbin from the magnet assembly, the upper end portions being connected to a weighing pan for weighing samples.