| 摘要 |
A primary float (A) consists of a self-standing float having a centre of gravity at its lower portion with a head portion of the float (A) exposed to the air above the water level. The primary float (A) is formed so that a secondary float (B) is inserted there into, and a connector ring can be set detachably in the head portion of the primary float (A). The connector ring is fitted around a top portion of the secondary float (B), and a stopper is fixed to an upper end section of the top portion of the secondary float (B) so that the secondary float (B) does not slip out in the downward direction. The secondary float (B) can be slide loosely in an axial bore in the primary float (A). Accordingly, the secondary float (B) can be moved independently of the primary float (A), so that the biting of a fish can be recognized well. Since the connector ring is used, the secondary float can be replaced with a single snapping action. |
