Abstract: An adjustable mounting device is provided for mounting an object at a selected position relative to a surface. The adjustable mounting device can be easily adjusted with one hand and generally includes a ball member, a stem portion attached to the ball member, a locking member, and first and second mounting portions coupled to the stem portion and the locking member, respectively. The locking member includes a ball retention member and a plunger member. The ball retention member includes first and second ball retention arms that are adapted to slidably engage the exterior surface of the ball member to form a pivotable connection.