| 摘要 |
<p>A compressor system is disclosed utilizing a first pump driven by an A/C motor and a second pump driven by a D/C motor. A gauge is provided which measures pressure from the system. The gauge utilizes a rotatable bezel which allows an operator to selectively choose the output pressure of the compressor system. The gauge provides a shut-off mechanism for disengaging one of the pumps when a predetermined pressure is reached within the system.
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