... adjacent timbers, 12.5 inches. Leaving 88 inches spanning 3 timbers, so the average spacing is 88/ 3= 29.33 inches. This is the spacing to enter for the wing rail front, plus the 25 inch timber spacing (2 x 12.5 inches) at the joint, and Templot will put the joint in the right place, and the timbers next to it. You are then left to shove the other two timbers to the required spacings, which back from timber "A" are 28 inches and 32 inches. 2_081731_560000000.png Set the full-size inches option. Select timber "A" and set zero button. Select timber "X ", click the centre readout and enter -28 inches (negative because backwards from "A "). set zero on that timber. Select timber "Y ", click the centre readout and enter -32 inches (negative because backwards from "X "). You can adjust timber "Z" similarly if you wish (there is no dimension on the drawing). N.B. Make sure ...