PROBLEM TO BE SOLVED: To provide a length measuring tool for a thin-line-shaped fishing sinker, capable of measuring the thin-line-shaped sinker of a desired weight extremely easily.SOLUTION: When the thin-line-shaped fishing sinker 13 is cut, the thin-line-shaped fishing sinker 13 is inserted in, for instance, a hole 7b, is pressed and fixed when a tip thereof reaches the bottom of the hole 7b, and is cut off just out of the opening of the hole 7b by a cutting tool. Optionally, the burr of the end of the thin-line-shaped fishing sinker 13 is shaved off by using a file 9.COPYRIGHT: (C)2013,JPO&INPIT【課題】極めて簡単に細線状の錘を所望の重量となるように計測できる細線状の釣り用錘の長さ計測具を提供する。【解決手段】細線状の釣り用錘13を切断する場合は、細線状の釣り用錘13を例えば穴7bに挿入し、先端部が穴7bの底に着いたところで押さえて固定し、穴7bの開口から出ている直ぐの部分で切断工具によって切断する。そして、必要に応じてヤスリ9を用い、細線状の釣り用錘13の端部のバリを削り取る。【選択図】 図1