Abstract: Disclosed herein is a forklift truck including a wheel supported frame, a boom assembly including an elongated outer boom pivotally connected to the frame and being of rectangular box construction including a hollow interior, an elongated inner boom telescopically located in and movable relative to the outer boom and being of downwardly open channel construction defining a downwardly open cavity, a work element carried at one end of the inner boom, hydraulic means for tilting the outer boom relative to the frame, and hydraulic means for telescopically moving the inner boom relative to the outer boom.