Official definition

This industry comprises establishments primarily engaged in manufacturing general purpose machinery (except ventilation, heating, air-conditioning, and commercial refrigeration equipment; metalworking machinery; engines, turbines, and power transmission equipment; pumps and compressors; and material handling equipment). Illustrative Examples: Automatic fire sprinkler systems manufacturing Bridge and gate lifting machinery manufacturing Fluid power cylinders manufacturing Fluid power pumps manufacturing Hydraulic and pneumatic jacks manufacturing Industrial-type furnaces manufacturing Packaging machinery manufacturing Power-driven handtools manufacturing Scales and balances manufacturing Welding equipment manufacturing Cross-References. Establishments primarily engaged in--