This paper shows the concept of the element wave maker and the experimental result of the divided wave maker which was made according to this concept. The element wave maker dosen't have width vertically or horizontally like a fluid dynamical singularity, and its velocity potential is expressed with a very simple formula. There are two types of wave makers which have been defined as the vertical and horizontal element wave makers. By combining these element wave makers, an arbitrary type wave maker can be expressed. The wave maker superposed with the vertical element wave maker, usually called a snake type wave maker, can generate directional waves and has been researched very well, the one superposed with the horizontal element wave maker can also produce complex motion such as not generating a progressive wave nor a local wave and absorbing an incident waves. The new wave maker-we call it COBRA wave maker-consists of ten horizontal element wave makers which are independently controlled with a personal computer. As the result, the motion of an arbitrary wave maker can be made with them. The comparision between the measurements and calculations for the progressive wave amplitude ratio of various kind of wave makers expressed approximately by combining horizontal element wave maker shows agreement fairly well.