Abstract: Load manipulating mechanism is mounted on a mobile wheel-driven support platform. All driving mechanism, energy source, and needed functional apparatus for mobility and lifting are self contained on the apparatus such that it may be conveniently moved to needed work sites for lifting and materials manipulation. Outriggers extendible from the main support platform and having surface engaging pads provide stability and leveling. Load arms in the mechanism are extendible and retractable between stowed travel and extended operating conditions, and include telescopic sections in a parallelogram arrangement. The load manipulating mechanism functions as load balancer, using a pneumatic control system and counterweight.