Frequently required to maintain equilibrium to prevent falling when moving, walking, standing, kneeling or crouching - particularly on narrow, uneven, irregular, slippery surfaces, going up or down ladders, stairs, scaffolding, ramps, poles or other objects using hands, arms, feet or legs. Interprets blueprints, drawings, manuals, specifications or sample parts to determine dimensions and tolerances of finished work pieces, sequence of operations and set up requirements.