Abstract: A rotatable, theft-resistant mount for office instruments such as computer consoles in accordance with the invention comprises a base having two vertically stacked sections. The lower section is generally circular with a depression in the middle of its upper surface. The upper section has a matching circular surface defined by a depending rim which nests over the circular lower section, and a depending stud rotatably affixed in its lower surface which mates with the depression in the upper surface of the lower section. The lower section is also provided with a diametrical tubular passage passing through the central depression. The depending stud affixed to the upper section is provided with a hole through which an elongated locking rod positioned within the tubular passage extends, thus preventing the upper section of the base from being separated from the lower section, while permitting relative rotation of the two sections.