| 摘要 |
The present invention relates to a target for measuring the center of a stern tube, more particularly, to a stern tube center target for making a worker who bores a hole in a state of being installed in a stern tube easily come in and out an opening hole. The present invention comprises: a target body installed in an opening hole of the stern tube to check a center point of the stern tube through a center hole formed at the center; and four supporting and fixing rods radially coupled to the outer surface of the target body to position the target body at the center of the stern tube by being supported on the inner surface of the stern tube. When the four supporting and fixing rods are radially coupled to the target body to measure the center of the stern tube, the internal angle of the supporting and fixing rods, positioned in the left and right sides of the target body, is 35-45° and the internal angle of the supporting and fixing rods, positioned in the upper and lower parts of the target body, is 135-145°. |
