Portable lifting arm

A portable lifting arm, comprising:

• a base having a bottom side and a top side;
• a plurality of casters fixed to the bottom side of the base, the base being movable on the casters;
• an arm mounting structure extending upward from the top side of the base;
• a counterweight disposed on the bottom side of the base beneath the arm mounting structure;
• a first arm segment having a first end and a second end, the first end of the first arm segment being attached to the arm mounting structure;
• a hinge rotatably connected to the second end of the first arm segment;
• a second arm segment having a first end and second end, the first end of the second arm segment rotationally connected to the hinge;
• a power tool rotationally connected to the second end of the second arm segment;
• and
• a controller, the controller in electrical communication with the power tool, the controller selecting between a first predetermined setting and second predetermined setting on the power tool based on a position of the first arm segment and the second arm segment relative to the arm mounting structure.