Abstract: A locking mechanism (10) that provides for locking a table leg (12) in an extended position and a folded position. The locking mechanism is mounted to the underside of a table (14) and is comprised of a bar (90) that is pivotally mounted between right and left flanges (20, 22) of the locking mechanism. The bar has a channel (112) that provides for laterally adjusting the table leg to compensate for uneven floor contours. A first locking member (136) is controlled by an overcenter lever (126) to seat a locking rod (138) in a locking channel (102) provided on one side of the bar, opposite the lever. This provides for locking the bar and the table leg in the extended, use position. Releasing the lever enables the lever to move out of the overcenter position so that the locking rod moves out of the locking channel and the bar is able to pivot into the folded position. A second locking member (150) then engages an enlarged portion (106) of the bar and serves to block the bar in the folded position.