Model Number: 67618. Stopper for multi-guide rulers and vis-pitch markers. Enables easy marking at the center of the board with stopper usage. When the stopper's clamp screw is fixed in the guide ruler's hole, aligning the main block to the stopper allows marking positions from the edge at 455mm and 500mm, suitable for marking the center of 3-shaku and 1000mm wide boards.
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