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The first pneumatic tool probably was the bellows used by blacksmiths. Modern air compressors were designed in the 1800s and were used in department stores. The system was used between sections to get change. Air compressors were also used on barges and boats. These were hand operated and needed four hardy men to keep it going. The air pump was used to supply air to divers. Due to the limits of human strength high pressures could not be produced and this limited the depth the divers could go to. As steam engines began to be used, the man power was replaced by this.fairchild pneumatic controls

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