Young modulus instrument with combined amplification measurement function

The utility model discloses a Young modulus instrument with a combined amplification measurement function, which belongs to the technical field of mechanics experiment instruments and comprises a support, an optical lever, a reading mechanism, a U-shaped tube mechanism and a metal wire connecting piece. The U-shaped pipe mechanism comprises a first vertical pipe, a second vertical pipe and a transverse pipe, the two ends of the transverse pipe are connected with the bottom of the first vertical pipe and the bottom of the second vertical pipe respectively to form a U-shaped container, liquid is arranged in the U-shaped container, a first piston is arranged in the first vertical pipe, a second piston is arranged in the second vertical pipe, and the first piston is connected with the second piston. And the liquid is sealed in the U-shaped pipe mechanism by the first piston and the second piston. Through the combined amplification of the U-shaped pipe mechanism and the optical lever, the amplification factor of t