| 摘要 |
The present invention relates to a midpoint measuring apparatus for frames, which measures a midpoint of various frames such as a window, a window frame, and a sign frame. To be more particular, a measuring bar is formed as a reference arm indicating a reference line is formed on the center of the upper surface of a rectangular pipe where a path is formed by penetrating the inside in a longitudinal direction and a first and a second moving hole, which are cut in a longitudinal direction to the end of the rectangular pipe, are formed respectively on both sides of the reference arm. Roller members equipped with a roller are formed to be respectively inserted into both sides of the path. A wire is wound on a pair of rollers in order to form a closed curve where both ends of the rollers face each other. Supporting plates are inserted and combined to both ends of the path in the measuring bar. A first fixing block is fixed and installed in a diagonal direction of both ends of the wire. A second fixing block is fixed and installed to both ends of the wire. The center of the frame is positioned in the reference line by moving the first and second fixing blocks which are fixed to each wire in order to compress the side surface of the frame. Therefore, the apparatus can measure a midpoint of various frames such as a window, a window frame, and a sign frame. |
