intersection of the structural member specific system, intersection specific methods and angle measurement instrument

摘要

The present invention intersection line position where the two structural members are formed by crossing in the case that are hidden by the welding joint, etc., the intersection invisible two members, it will provide a system and method for easily identified. And A angle measuring instrument is provided with a computing means for installing the program, the angle measuring instrument comprises a first plate and a second plate superimposed on relative rotation in the same rotational axis F, the first plate and the second plate has a contact edge which is in contact with the surface of the structural member, perpendicular to beat from the axis of rotation F to the contact edge has a length z (mm), previously identified to the surface having at least one reference point E, is a device for contacting the sides when it is brought into contact with the abutment edge on the surface of the structural member is to identify the angle which forms cross, program, the angle and using the length z, to perform the calculation of the distance from the reference point E to the intersection X.BACKGROUND 2