I am in the process of assembling my first Delta 3d-Printer. In order to get the Diagonal Push Parallel Rod Arm the same size, I created this jig to help out. It uses a small Hand Operated Hold Down Horizontal-Push Pull Toggle Clamp to press the ends in and set the distance. The end measurement is close to 310 mm. After the pieces have been printed out I found a scrap of wood and mounted the parts to it.