To provide a combine in which a compact reaping height detection device is provided while securing an angle detection accuracy of a ground body.SOLUTION: A reaping height detection device 14 comprises: a ground body 30 which vertically rotates with a first rotary shaft 33 as a fulcrum； a potentiometer which has a detection shaft 31a parallel to the first rotary shaft 33, for detecting a rotary angle of the potentiometer side detection arm 51 rotating with the detection shaft 31a as a fulcrum； and a ground side detection arm 52 which is provided on the first rotary shaft 33, engages to the potentiometer side detection arm 51, for inputting rotation of the first rotary shaft 33 to the potentiometer. The ground side detection arm 52 is longer than the potentiometer side detection arm 51, an engagement position of the ground side detection arm 52 and potentiometer side detection arm 51 is farther than the detection shaft 31a, in view from the first rotary shaft 33.SELECTED DRAWING: Figure 14【課題】接地体の角度検出精度を確保しながら刈高さ検出装置をコンパクトに構成するコンバインを提供する。【解決手段】刈高さ検出装置１４は、第１回動軸３３を支点として上下回動する接地体３０と、第１回動軸３３と平行な検出軸３１ａを有し、検出軸３１ａを支点として回動するポテンショ側検出アーム５１の回動角を検出するポテンショメータと、第１回動軸３３に設けられ、ポテンショ側検出アーム５１と係合することで、第１回動軸３３の回動をポテンショメータに入力する接地側検出アーム５２と、を備え、接地側検出アーム５２は、ポテンショ側検出アーム５１よりも長く形成され、接地側検出アーム５２とポテンショ側検出アーム５１との係合位置は、第１回動軸３３から見て検出軸３１ａよりも遠い。【選択図】図１４
