Line length measuring device and fishing reel comprising the same

A line length measuring device capable of measuring a line length of a fishing line reeled out from a spool of a fishing reel, which comprises a reel main body and the spool around which the fishing line is windable, the line length measuring device comprising:

• a rotation detector capable of detecting a number of revolutions of the spool relative to the reel main body;
• a line length calculator that calculates a line length of the reeled out fishing line;
• 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,
• wherein the fishing line information setting part is 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, and
• wherein the line length calculator is configured to calculate the line length of the reeled out fishing line based on (i) the number of revolutions of the spool detected by the rotation detector, (ii) the type of the fishing line to be wound that is input in the fishing line information setting part;
• and (iii) the value of the line winding diameter (Dmax) that is input in the fishing line information setting part.