Patent attributes
A first plate includes an opening configured to be placed over a blade of a first rotor. A second plate includes an opening configured to be placed over a blade of a second rotor. Each plate includes a first pin configured to contact a leading edge of a blade located on one side of the blade in the opening and a second pin configured to contact a leading edge of a blade located on an opposite side of the blade in the opening, and a third pin configured to contact a leading edge of the blade in the opening. An indicator line is marked on the first plate and a pair of boundary lines marked on the second plate are spaced apart a distance indicative of an acceptable range for blade clocking between the first and second rotors when the indicator line is located between the boundary lines.