Abstract: A tool for tuning the pitch of blades on a model propeller with pivoting blades, the tool comprising a mount for the model propeller and a calculation module. The mount allows the propeller to be positioned such that the axis of the propeller coincides with a fixed reference axis of the mount and to place each blade of the propeller, successively, in a measurement position. The calculation module determines the angle between a chord of a blade in the measurement position and a fixed reference plane of the tool, the fixed reference plane being orthogonal to the fixed reference axis, based on optical sightings by the calculation model on a suction face of the blade in the measurement position.

Abstract: The invention relates to a tool for tuning the pitch of the blades of a model propeller (50) with pivoting blades, characterized in that it comprises: means (2, 13-16) for mounting the model propeller in the tool, able to make it possible to position the propeller in such a way that its axis of rotation coincides with a fixed reference axis (3) of the tool, and to place each blade of the propeller successively in a measurement position, optical means (4, 8-11) for determining the angle between a chord of a blade (51) in measurement position and a fixed reference plane of the tool orthogonal to the reference axis on the basis of two points (5, 6), referred to as measurement points, sighted by the said optical means on the suction face of the said blade in measurement position. The invention extends to a tool set additionally comprising at least one standard propeller provided with fixed blades of different pitches, and to a tuning method using the tool or the tool set according to the invention.