A line-winding device including a tension detection unit that can be incorporated in a reel, can be downsized, and can measure a tension with high accuracy even at the time of stopping without the need to bend a line path. A line-winding device is configured to include: a spool capable of winding a fishing line; an operating part for winding the fishing line around the spool; a support shaft portion for rotatably supporting the spool; a restoring force generation unit for generating a restoring force between the support shaft portion and the spool; a restricting part for restricting a rotational movement amount of the spool; and a detection unit for detecting the rotational movement amount of the spool.

A dual-bearing reel capable of reeling in and reeling out a fishing line includes a reel body, a spool, a spool shaft, an operating member, and an oscillating mechanism. The spool is rotatably supported by the reel body. The spool shaft supports the spool. The operating member is movably provided on the reel body and moves to perform an adjustment operation on a braking force that acts on the spool. The oscillating mechanism causes the fishing line to oscillate in the axial direction in synchronization with a rotation of the spool.

A casting device may include a microcontroller, an inertial measurement unit in communication with the microcontroller, an actuator in communication with the microcontroller, and a power source for providing power to the casting device. The casting device may also include one or more indicators that provide user feedback regarding accurate use of the device.

A fishing information management system has a fishing rod to which a fishing reel with a spool capable of winding a fishing line is attached, and is configured to include a fishing line unwinding commencement detector that detects the commencement of the unwinding of the fishing line by the fishing reel, an operation information detector that detects the operation information of at least either of the fishing reel or the fishing rod, an operation information list creation portion that extracts the operation information each time when the unwinding of the fishing line commences and creates an operation information list that aggregates several operation information, a receiver that obtains fishing information from an external device, and a processor that associates the operation information list with the fishing information.

A line length measuring device that is capable of measuring a line length of a fishing line reeled out from a spool of a fishing reel and includes: a rotation detector capable of detecting a number of revolutions of the spool relative to a reel main body; a line length calculator that calculates a line length of the reeled out fishing line from the number of revolutions detected by the rotation detector; and a fishing line information setting part that sets fishing line information for the calculation of the line length of the reeled out fishing line by the line length calculator, the fishing line information setting part being configured to enable input of a type of a fishing line to be wound and a line winding diameter (Dmax) of the spool after winding of the fishing line to be wound.

Provided is a sound generation mechanism including a rotation member configured to rotate together with a spool and including a recess-protrusion portion formed on an outer peripheral surface along a circumferential direction of the rotation member; a contacting member moveably supported relative to a pivot shaft and configured to elastically move relative to the recess-protrusion portion of the rotation member; a biasing member configured to bias the contacting member to a predetermined position; and a restriction member configured to restrict movement of the contacting member in an axial direction of the pivot shaft. With this mechanism, detachment or damage of a retaining ring due to movement of a contacting member can be suppressed.