To provide a combine capable of surely covering a ground side linkage member and a potentiometer side linkage member while simplifying a cover body.SOLUTION: A reaping height detection device comprises: a ground body 30 which is arranged in a vertically rotatable state on one surface side of a plate member 23； a potentiometer 31 which is arranged on other surface side of the plate member 23 in a fixed manner, for detecting a rotary angle of the potentiometer side detection arm 51； a first rotary shaft 33 penetrating the plate member 23 from one surface side to the other surface side, for supporting the ground body 30 coupled to the one end side in a vertically rotatable state； a ground side detection part 52 which is coupled to the other end side of the first rotary shaft 33, linked to the potentiometer side detection arm 51, and inputs rotation of the first rotary shaft 33 to the potentiometer 31； and a cover body 60 which is arranged on the other surface side of the plate member 23, and covers at least the ground side detection arm 52 and the potentiometer side detection arm 51 between it and the plate member 23.SELECTED DRAWING: Figure 13【課題】カバー体の構成を簡略化しつつ接地側連係部材及びポテンショ側連係部材を確実に覆うコンバインを提供する。【解決手段】刈高さ検出装置は、プレート部材２３の一面側に上下回動自在に配置される接地体３０と、プレート部材２３の他面側に固定状態で配置され、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３１と、プレート部材２３を一面側から他面側に亘って貫通し、一端側に連結される接地体３０を上下回動自在に支持する第１回動軸３３と、第１回動軸３３の他端側に連結されるとともにポテンショ側検出アーム５１に連係され、第１回動軸３３の回動をポテンショメータ３１に入力する接地側検出アーム５２と、プレート部材２３の他面側に配置され、少なくとも接地側検出アーム５２及びポテンショ側検出アーム５１をプレート部材２３との間で覆うカバー体６０と、を備える。【選択図】図１３
