The invention relates to a cursor displayed float-type liquidometer. A
float chamber of the cursor displayed float-type liquidometer is made of non-ferromagnetic materials, a float is a hollow ball-shaped float made of ferromagnetic materials, and a graduation ruler is installed outside the
float chamber; a cursor comprises a cylindrical magnetic steel with a central hole, a short shaft, a connection rod and a balancing weight, wherein the central hole of the magnetic steel is horizontally located on the axis of the magnetic steel, and
magnetic poles of the magnetic steel are distributed along the axial direction or located on the radial inner and outer surfaces of the magnetic steel; the short shaft penetrates through the central hole of the magnetic steel to be fixedly installed, and the connection rod is hinged to the short shaft and capable of rotating around the short shaft; the balancing weight is fixedly connected with the lower end of the connection rod, and the center of gravity of the cursor is guaranteed to be located on the
medial axis of the cursor and below the horizontal
central line of the magnetic steel; and the outer wall of the
float chamber is provided with a plane which is parallel to the axis of the float chamber, and the magnetic steel is in line contact with the plane and rolls on the plane along the axial direction of the float chamber. The cursor displayed float-type liquidometer uses the cursor to replace a
buoy and is simple in structure, easy to manufacture, reliable in using, cost-saving and wide in application range.