Patent ID: 8499626

Claim:
Device for adjusting the pitch angle of propeller blades for a model engine comprising at least one rotor, the blades extending radially on the surface of the rotor to form a propeller, the device comprising: a tool-holder comprising a base designed to be fixed onto a part of the outside of the engine housing and an upper part, a support connected to said upper part using structure for rotational travel around an axis of rotation, said support being movable horizontally along a longitudinal axis (XX′), said longitudinal axis being parallel to a main axis of the model engine, and a contactless optical measurement sensor mounted on the movable support, wherein said support is movable to a position in which said axis of rotation is substantially aligned with an axis of rotation of a blade with respect to a rotor of the propeller; and wherein said measurement sensor is configured to measure a distance between the measurement sensor and the blade.