| 摘要 |
PROBLEM TO BE SOLVED: To provide a pitch marking 3 jig capable of promoting efficiency of work for marking at predetermined intervals and ensuring safety of a worker in building work such as reinforcing bar work, steel work or the like. SOLUTION: The pitch marking jig 1 is constituted of an arm, a rotational body supported by the arm in a rotatable manner and marking members arranged along the direction of a radius at regular intervals in the circumferential direction on the circumference of the rotational body.
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