A device (10, 110, 210) for use in lifting, transporting and installing sheet material, the device comprising: a base (12, 112, 212) comprising a frame; wheels on which the base is supported, such that the base is movable across a surface on the wheels, the wheels including: one or more rear wheels (14a, 114a, 214a) that are connected to the rear of the base in a manner that permits steering of the device during movement across the surface, and a front wheel set (14b, 114b, 214b) that is connected to the front of the base, the front wheel set including a wheel to each side of the device, the wheels of the front wheel set being rotatable about a common axis (Cx); a mast (16, 116,216) that extends upwardly from the base, and is connected to the base such that the mast is rotatable relative to the base about a rotational axis (R X), the rotational axis being parallel to the common axis; a front portion that includes the front wheel set and the front of the base, and a rear portion that includes the rear wheels and the rear of the base; the frame including a linkage (40, 58; 140, 158; 240, 258) that extends between the front and rear portions of the device, whereby the length of the linkage is adjustable to thereby adjust the wheelbase of the device; a carriage (20, 120, 220) that is in engagement with the mast so that carriage is movable along at least a traversable portion of the mast and is guided by the mast; a supporting head (18, 118, 218) that is mounted to the carriage, and is configured to support sheet material above the surface; a lifting mechanism to provide support to the carriage in the longitudinal direction of the mast; an actuator (44, 144, 244) that is operable to change the angular position of the mast relative to the base; and characterized in that it further comprises an articulated coupling (60, 160, 260) between the front and rear wheels that enables the rotational axis of the rear wheels to rotate within a general horizontal plane and about an articulation axis (A X) relative to the front wheels to thereby steer the device. a base (12, 112, 212) comprising a frame; wheels on which the base is supported, such that the base is movable across a surface on the wheels, the wheels including: one or more rear wheels (14a, 114a, 214a) that are connected to the rear of the base in a manner that permits steering of the device during movement across the surface, and a front wheel set (14b, 114b, 214b) that is connected to the front of the base, the front wheel set including a wheel to each side of the device, the wheels of the front wheel set being rotatable about a common axis (Cx); one or more rear wheels (14a, 114a, 214a) that are connected to the rear of the base in a manner that permits steering of the device during movement across the surface, and a front wheel set (14b, 114b, 214b) that is connected to the front of the base, the front wheel set including a wheel to each side of the device, the wheels of the front wheel set being rotatable about a common axis (Cx); a mast (16, 116,216) that extends upwardly from the base, and is connected to the base such that the mast is rotatable relative to the base about a rotational axis (R X), the rotational axis being parallel to the common axis; a front portion that includes the front wheel set and the front of the base, and a rear portion that includes the rear wheels and the rear of the base; the frame including a linkage (40, 58; 140, 158; 240, 258) that extends between the front and rear portions of the device, whereby the length of the linkage is adjustable to thereby adjust the wheelbase of the device; a carriage (20, 120, 220) that is in engagement with the mast so that carriage is movable along at least a traversable portion of the mast and is guided by the mast; a supporting head (18, 118, 218) that is mounted to the carriage, and is configured to support sheet material above the surface; a lifting mechanism to provide support to the carriage in the longitudinal direction of the mast; an actuator (44, 144, 244) that is operable to change the angular position of the mast relative to the base; and characterized in that it further comprises an articulated coupling (60, 160, 260) between the front and rear wheels that enables the rotational axis of the rear wheels to rotate within a general horizontal plane and about an articulation axis (A X) relative to the front wheels to thereby steer the device.