A measuring mechanism (1) with a central housing (3) onto which two crossed moving coils (26, 27) are wound and in which a permanent magnet (17) permanently connected to a shaft (19) with pointer is accommodated; from a hub (18) of the magnet (17), two eccentric pins (29) protrude in the axial direction which are at least partially immersed in silicon (28) which is located in a well (14) recessed in the interior of the central housing (3). <IMAGE>
