a lower hinge plate constructed and arranged for attachment to a door casing through exposed screw holes, the lower hinge plate having integrated therewith a lower support sleeve;

an upper hinge plate constructed and arranged for attachment to a door through exposed screw holes, the upper hinge plate having integrated therewith an upper sleeve, the lower hinge plate and the upper hinge plate being substantially identical and interchangeable;

the lower support sleeve and the upper sleeve each including a bushing disposed and fitting closely therein, each said bushing being cylindrical between first and second ends and having an axial hole therein for placement of a hinge pin; and

a hinge pin extending between the bushing of the lower support sleeve and the bushing of the upper sleeve and passing through the axial holes of the bushings, the hinge pin being supported by the lower support sleeve, and carrying the upper sleeve,

wherein the axial hole of at least one of the bushings is eccentric to the axis of the bushing, and the at least one bushing with the eccentric axial hole comprises a radial flange at the first end thereof, accessible between the upper sleeve and the lower support sleeve, from outside the hinge to enable rotation of the bushing, and

wherein the bushing of the lower support sleeve is internally threaded below the axial hole, and carries an externally threaded screw therein, which can be rotated to lift the hinge pin.