Measuring the incidence angle between the wing and horizontal stabilizer centerlines is easy with the Wing Incidence Tool. 

GliderThrow Wing Incidence Tool

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Measuring the incidence angle between the wing and horizontal stabilizer centerlines is easy with the Wing Incidence Tool. This set of bars and optional V-Tail adapters are to be used in conjunction with the GliderThrow digital angle measuring kit to accurately measure incidence and decalage angles on any sailplane.

Five easy steps to measuring incidence/decalage:
• Setup your plane on the bench in a horizontal position.
• Install the Wing Incidence Tool on the wing and stab and lock them in place by tightening the screws on each part.
• Place both GliderThrow units on a level surface and reset them.
• Place each unit on the magnetic support of each beam (place GliderThrow units with hinge marking towards the leading edge).
• View the incidence angle on GliderThrow's "Differential" screen or on your device.