| 摘要 |
PROBLEM TO BE SOLVED: To provide a positioning jig equipped with an angle gauge, capable of easy positioning of ridge substrate materials. SOLUTION: There are provided with the positioning jig 10, mounted on the slope opposed to the ridge of a roof and used for positioning a pair of ridge substrate materials 20 and 21 opposed to each other, is connected with coupling members 13 and 14 mounted to one outside of a pair of plate pieces 11 and 12 at a free cross angle, a pair of plate pieces 11 and 12 bend their ends, locking sections 111 and 121 capable of locking the lower ends 201 and 211 of the ridge substrate materials 20 and 21 and contact sections 112 and 122, capable of being brought into contact with the outsides of the ridge substrate materials 20 and 21 are provided, and an angle gauge 15 for measuring the angle of inclination of the slope of the counterposed plate piece 12 is provided to one of a pair of plate pieces 11 and 12.
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