Abstract: A mounting device and method for providing vertical adjustment of one member relative to another, for use in an installation in which vertical alignment between adjacent pieces of equipment is desired. A base is adapted for mounting to a supporting surface, and a threaded member extends from the base. A support member in the form of a nut is engageable with the threaded member, and supports a piece of equipment above the supporting suface. A locking ring is interposed between the base and the support member for selectively interconnecting the support member with the base to prevent relative rotation therebetween. In this manner, the vertical position of the support member above the base is fixed, as is the vertical position of the equipment relative to the supporting surface. The ring includes a plurality of spaced tabs which are bendable into engagement with one or more slots formed in the support member to prevent rotation of the support member and to fix the vertical position of the equipment.