Flap draws instrument in hole

The utility model discloses a flap draws instrument in hole passes a mouthful frame hole, installs plate nut (5) the position on mouth frame (4). The instrument includes that one end is equipped withmost advanced mark rod (1) and sets up adjustment Assembly (2) that are used for adjusting mark rod (1) on mark rod (1), adjustment Assembly (2) and plate nut (5) threaded connection, during the mark,most advanced one end aspis frame (4) the surface of mark rod (1). The utility model discloses be provided with on mark rod (1) with plate nut (5) threaded connection's adjustment Assembly, make it fix on plate nut (5), and is drawing the central point that the hole in -process keeps mark rod (1) to fix in mouth frame hole and putting, the hole operation is drawn in very big simplification, the hole is drawn to the accuracy, increases substantially work efficiency. 本实用新型公开了种口盖引孔的工具，穿过口框孔，安装在口框（4）上的托板螺母（5）位置。所述工具包括端设有尖端的标记杆（1）和设置在标记杆（1）上用于调节标记杆（1）的调节部件（2），所述调节部件（2）与托板螺母（5）螺纹连接；标记时，所述标记杆（1）的尖端端突出口框（4）表面。本实用新型在标记杆（1）上设置有