| 摘要 |
FIELD: measurement equipment.SUBSTANCE: invention relates to measurement equipment. The device comprises a beam made of amorphous ferromagnetic material. Also the beam comprises at least four flattened brackets covering the surface area equal or more than a quarter of the disc limited with a body ring. The diameter of the beam is twice or more higher than the diameter of the spring.EFFECT: development of a device for protection of a balance spring of a clock from exposing magnetic fields.5 cl, 4 dwg |
