Abstract: A combination channel post and bracket including abutting means for removably securing the bracket to the post, and enabling the vertical level of the bracket to be incrementally varied along the post. The abutting means may include an upper rod for contacting the inside of the post and a lower rod for contacting the outside of the post, and a cam for also contacting the outside of the post. The rotation of the cam provides a fine adjustment of the slant of the bracket, and simultaneously locks the bracket at the new adjusted position. For purposes of exacting adjustability, the lower rod and cam may have several removable positions on the bracket for precisely varying the incline of the bracket. A spacer may be positioned between the post and the cam, to enable the cam to provide fine adjustment of the slant of the bracket and to lock the bracket in place, for the several different positions of the lower rod on the bracket, including a reverse slant position.