Electrical meter instrument, for vehicle dashboard, has coil spring with sealed outer end in oil filled zone, and magnet return disk

摘要

Electrical meter assembly which brings the needle to a zero indication, when there is no electrical signal, has the indicator needle axis (21) through a drilling in the leading housing half-section with the indicator needle (4) at its leading end. An induction coil (50) is round the housing (1). The coil spring together with the magnet disk is within the oil filled zone, with a sealed outer end in or at the housing (1). An auxiliary magnet can be fitted to act on the coil spring.