An apparatus for adjusting a height-adjustable foot of a piece of furniture, comprising:
- a controlled element of the height-adjustable foot, the controlled element extending into a stem, at least partly threaded and configured to be inserted, screwable and unscrewable, into a cylindrical body which is internally threaded, and which can be coupled with the piece of furniture;
- and
- a tool for controlling said controlled element of the height-adjustable foot;
- the tool comprising:
- an engagement portion and a handle for rotating said engagement portion,
- two arms extending from said handle, said two arms embracing a diametric edge of said height-adjustable foot to keep the tool and the engagement portion associated laterally with the height-adjustable foot,
- said engagement portion being arranged between said two arms, which face each other, and becoming engaged with said controlled element for rotating said height-adjustable foot,
- wherein said engagement portion comprises a toothing having a toothed section which extends distributed over a rounded area of a surface between said two arms of said handle and which engages with at least one toothing formed peripherally on said controlled element of said height-adjustable foot,
- wherein teeth of said toothed section and teeth of said at least one toothing of said controlled element are asymmetrical and angled, enveloping, curved teeth that follow a circular configuration of said controlled element,
- wherein said controlled element of said height-adjustable foot comprises two superimposed toothing rows,
- wherein the teeth of the two superimposed toothing rows are teeth of a saw-toothed wheel, the teeth of the two superimposed toothing rows being tilted in an opposite direction with respect to each other, and
- wherein the rounded area of the surface between the two arms of the handle comprises the toothed section and a smooth section parallel thereto, the toothed section being superimposed on the smooth section,
- whereby the toothed section is positioned to engage at least a portion of a first one of the two superimposed toothing rows of the saw-toothed wheel, the smooth section preventing an engagement of the tool with a second one of the two superimposed toothing rows of the saw-toothed wheel, and
- whereby, by turning the tool upside down, the toothed section is positioned to engage the second one of the two superimposed toothing rows of the saw-toothed wheel, the smooth section preventing an engagement of the tool with the first one of the two superimposed toothing rows of the saw-toothed wheel.