A 3 2 4 1 2 3 4 5 6 1 2 2 2 2 2 6 5 3 1 4 2 A 5 6 18",24",30",36" CENTER TO CENTER 69.5mm 2.7in B B 83.8mm 3.3in 107.1mm 4.2in C C 81mm 3.2in 108mm 4.