Measuring jig, measuring equipment and measuring method

The invention provides a measuring jig which is matched with a quadratic element detection instrument. A camera module comprises a plurality of elements, a groove is defined by at least three of the elements, at least parts of a reinforcing glue is located in the groove, a cross section of the reinforcing glue is in a right triangle shape, a right triangle comprises a first right-angle side, a second right-angle side and an inclined side, the second right-angle side is located at the bottom of the groove, and the measuring jig comprises a fixing piece, an overturning piece and a positioning piece; the fixing piece is rotatably connected with the overturning piece, and a first containing groove is formed in the side, away from the fixing piece, of the overturning piece; and the positioningpiece is arranged in the first containing groove, and the camera module is arranged on the positioning piece. The overturning piece and the fixing piece relatively rotate by a preset angle so that thequadratic element detecti