The present invention relates to an adjustable foot for setting up equipment in alignment. The adjustable foot comprises an annular element provided with an axial bore with internal screw thread. The adjustable foot furthermore comprises a shaft element provided with external screw thread matching the internal screw thread. When screwed into the bore, this shaft element can be adjusted in the axial direction with respect to the annular element by turning with respect to the annular element. The adjustable foot furthermore comprises a support part, provided on the annular element or shaft element as well as a washer. The washer and the support part are each provided with a convex respectively concave surface having essentially the same radius of curvature, such that the angle of the washer with respect to the support part can be adjusted. According to the invention the top surface of the annular element is made to slope downwards in the radially outward direction. According to the invention the adjustable foot furthermore comprises a cap with a diameter greater than that of the internal screw thread. According to a further aspect, the invention relates to a combination of an adjustable foot according to the invention, a substructure and equipment set up in alignment on said substructure, as well as an anchor bolt, wherein the equipment is anchored to the substructure by means of the anchor bolt, with the adjustable foot between them.