Aircraft nose landing gear turning angle measurement auxiliary device and measurement method

The invention discloses an auxiliary device for measuring a turning angle of a nose landing gear of an airplane and a measuring method. The device is composed of two groups of identical measuring mechanisms. Each measuring mechanism comprises a skeleton assembly, a presser, an adapter, a screw sleeve and a screw. The framework assembly is composed of two side framework assemblies which are symmetrical left and right and fixed to sliding rails on the left side and the right side of a pilot seat. The two screw sleeves are fixedly connected to the middle positions of the upper parts of the left and right framework components respectively; after the two screws respectively pass through the screw sleeves, the ends of the screws are connected with the adapters; the two compactors are arranged on the upper portions of the front ends of the left framework assembly and the right framework assembly, the upper portions of the compactors are tightly attached to the rudder pedal in a pressing mode, the lower portions of t